<SEC-DOCUMENT>0001104659-26-071838.txt : 20260609
<SEC-HEADER>0001104659-26-071838.hdr.sgml : 20260609
<ACCEPTANCE-DATETIME>20260609160701
ACCESSION NUMBER:		0001104659-26-071838
CONFORMED SUBMISSION TYPE:	S-8 POS
PUBLIC DOCUMENT COUNT:		5
FILED AS OF DATE:		20260609
DATE AS OF CHANGE:		20260609
EFFECTIVENESS DATE:		20260609

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			APPLIED OPTOELECTRONICS, INC.
		CENTRAL INDEX KEY:			0001158114
		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
		ORGANIZATION NAME:           	04 Manufacturing
		EIN:				760533927
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		S-8 POS
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-253534
		FILM NUMBER:		261076121

	BUSINESS ADDRESS:	
		STREET 1:		13139 JESS PIRTLE BLVD
		CITY:			SUGAR LAND
		STATE:			TX
		ZIP:			77478
		BUSINESS PHONE:		281-295-1800

	MAIL ADDRESS:	
		STREET 1:		13139 JESS PIRTLE BLVD
		CITY:			SUGAR LAND
		STATE:			TX
		ZIP:			77478

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	APPLIED OPTOELECTRONICS INC
		DATE OF NAME CHANGE:	20010824
</SEC-HEADER>
<DOCUMENT>
<TYPE>S-8 POS
<SEQUENCE>1
<FILENAME>tm2616951d10_s8pos.htm
<DESCRIPTION>S-8 POS
<TEXT>
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<P STYLE="margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;<B>As filed with the Securities and Exchange
Commission on June&nbsp;9, 2026</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right">Registration No.&nbsp;333-257009</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right">Registration No.&nbsp;333-265711</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right">Registration No.&nbsp;333-272928</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right">Registration No.&nbsp;333-286464</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right">Registration No.&nbsp;333-217871</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right">Registration No.&nbsp;333-236831</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right">Registration No.&nbsp;333-230243</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right">Registration No.&nbsp;333-223347</P>

<P STYLE="text-align: right; margin: 0pt 0; font: 10pt Times New Roman, Times, Serif">Registration No.&nbsp;333-253534</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>UNITED STATES</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>SECURITIES AND EXCHANGE COMMISSION</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Washington, D.C. 20549</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>POST-EFFECTIVE AMENDMENT NO. 1 TO:</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>FORM&nbsp;S-8 REGISTRATION STATEMENT NO. 333-257009</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>FORM&nbsp;S-8 REGISTRATION STATEMENT NO. 333-265711</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>FORM&nbsp;S-8 REGISTRATION STATEMENT NO. 333-272928</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>FORM&nbsp;S-8 REGISTRATION STATEMENT NO. 333-286464</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>POST-EFFECTIVE AMENDMENT NO. 2 TO:</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>FORM&nbsp;S-8 REGISTRATION STATEMENT NO. 333-217871</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>FORM&nbsp;S-8 REGISTRATION STATEMENT NO. 333-236831</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>FORM&nbsp;S-8 REGISTRATION STATEMENT NO. 333-230243</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>FORM&nbsp;S-8 REGISTRATION STATEMENT NO. 333-223347</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>FORM&nbsp;S-8 REGISTRATION STATEMENT NO. 333-253534</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Under the Securities Act of 1933</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 14pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Applied Optoelectronics,&nbsp;Inc.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">(Exact name of registrant as specified in its charter)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="font-size: 10pt; text-align: center; width: 49%"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>Delaware</B></FONT></TD>
    <TD STYLE="font-size: 10pt; text-align: center; width: 2%">&nbsp;</TD>
    <TD STYLE="font-size: 10pt; text-align: center; width: 49%"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>76-0533927</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="font-size: 10pt; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(State or other jurisdiction of<BR> incorporation or organization)</FONT></TD>
    <TD STYLE="font-size: 10pt; text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: center">(I.R.S. Employer <BR>
Identification Number)</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="font-size: 10pt; text-align: center">&nbsp;</TD>
    <TD STYLE="font-size: 10pt; text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="text-align: center"><B>13139 Jess Pirtle Blvd.</B> <B><BR>
Sugar Land, TX 77478<BR>
</B> <B>(281) 295-1800</B></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="font-size: 10pt; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(Address, including zip code, and telephone number,<BR> including area code, of Registrant&rsquo;s principal executive offices)</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="font-size: 10pt; text-align: center">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="text-align: center"><B>Applied Optoelectronics,&nbsp;Inc. 2026 Equity Incentive Plan</B> <BR>
<BR>
<B>Applied Optoelectronics,&nbsp;Inc. Amended and Restated 2021 Equity Incentive Plan<BR>
<BR>
</B>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;Applied Optoelectronics, Inc. Amended
and Restated 2013 Equity Incentive Plan</B></P>
<B></B></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="font-size: 10pt; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(Full title of the plan)</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="font-size: 10pt; text-align: center">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="text-align: center"><B>Stefan J. Murry</B> <B><BR>
Chief Financial Officer<BR>
</B> <B>Applied Optoelectronics,&nbsp;Inc.<BR>
</B> <B>13139 Jess Pirtle Blvd.<BR>
</B> <B>Sugar Land, TX 77478<BR>
</B> <B>(281) 295-1800</B></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="font-size: 10pt; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(Name, address, including zip code, and telephone number, <BR> including area code, of agent for service)</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="font-size: 10pt; text-align: center">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="text-align: center"><I>Copies to:</I></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="text-align: center">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="text-align: center"><B>David C. Kuo<BR>
 General Counsel<BR>
 Applied Optoelectronics,&nbsp;Inc.<BR>
 13139 Jess Pirtle Blvd.<BR>
 Sugar Land, TX 77478<BR>
 (281) 295-1800</B></TD></TR>
  </TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.25in">Indicate by check mark whether the registrant
is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company.
See the definitions of &ldquo;large accelerated filer,&rdquo; &ldquo;accelerated filer,&rdquo; &ldquo;smaller reporting company,&rdquo;
and &ldquo;emerging growth company&rdquo; in Rule&nbsp;12b-2 of the Exchange Act.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-left: 0.1in; text-indent: -0.1in; width: 45%"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Large accelerated filer</FONT></TD>
    <TD STYLE="width: 5%"><FONT STYLE="font-family: Wingdings">&#120;</FONT></TD>
    <TD STYLE="width: 45%"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Accelerated filer</FONT></TD>
    <TD STYLE="width: 5%"><FONT STYLE="font-family: Wingdings">&#168;</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-left: 0.1in; text-indent: -0.1in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Non-accelerated filer</FONT></TD>
    <TD><FONT STYLE="font-family: Wingdings">&#168;</FONT></TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Smaller reporting company</FONT></TD>
    <TD><FONT STYLE="font-family: Wingdings">&#168;</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-left: 0.1in; text-indent: -0.1in">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Emerging growth company</FONT></TD>
    <TD><FONT STYLE="font-family: Wingdings">&#168;</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.25in"><FONT STYLE="font-family: Times New Roman, Times, Serif">If
an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying
with any new or revised financial accounting standards provided pursuant to Section&nbsp;7(a)(2)(B)&nbsp;of the Securities Act.&#8239;<FONT STYLE="font-family: Wingdings">&#168;</FONT></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>





<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>EXPLANATORY NOTE</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Pursuant to Securities Act Forms Corporation Finance Interpretation
126.43 (&ldquo;CFI 126.43&rdquo;) published by the Securities and Exchange Commission (the &ldquo;Commission&rdquo;), Applied Optoelectronics,&nbsp;Inc.
(the &ldquo;Company&rdquo; or &ldquo;Registrant&rdquo;) is filing this Post-Effective Amendment No.&nbsp;1 to Registration Statements
on Form&nbsp;S-8 (collectively, the &ldquo;Post-Effective Amendment No. 1&rdquo;) to the following registration statements on Form&nbsp;S-8
filed by the Registrant with the Commission:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
    <TD STYLE="width: 0.25in">&nbsp;</TD>
<TD STYLE="width: 0.25in">(i)</TD><TD>Registration Statement on Form&nbsp;S-8 filed by the Registrant with the Commission pursuant to General Instruction E on June&nbsp;11,
2021 (File No.&nbsp;333-257009) with respect to 2,100,000 shares of its common stock, par value $0.001 per share (&ldquo;Common Stock&rdquo;)
to be issued under the Applied Optoelectronics,&nbsp;Inc. 2021 Equity Incentive Plan (as amended, the &ldquo;Amended and Restated 2021
Plan&rdquo;);</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
    <TD STYLE="width: 0.25in">&nbsp;</TD>
<TD STYLE="width: 0.25in">(ii)</TD><TD>Registration Statement on Form&nbsp;S-8 filed by the Registrant with the Commission pursuant to General Instruction E on June&nbsp;17,
2022 (File No.&nbsp;333-265711) with respect to 1,634,000 shares of Common Stock to be issued under the Amended and Restated 2021 Plan;</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in">(iii)</TD><TD>Registration Statement on Form&nbsp;S-8 filed by the Registrant with the Commission pursuant to General Instruction E on
                                                                   June&nbsp;26, 2023 (File No.&nbsp;333-272928) with respect to 2,800,000 shares of Common Stock to be issued under the Amended and
                                                                   Restated 2021 Plan; and</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in">(iv)</TD><TD>Registration Statement on Form&nbsp;S-8 filed by the Registrant with the Commission pursuant to General Instruction E on April&nbsp;10,
2025 (File No.&nbsp;333-286464) with respect to 2,000,000 shares of Common Stock to be issued under the Amended and Restated 2021 Plan.</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">The Company is also filing
this Post-Effective Amendment No.&nbsp;2 to Registration Statements on Form&nbsp;S-8 (collectively with the Post-Effective Amendment No.
1, the &ldquo;Post-Effective Amendment&rdquo;) to the following registration statements on Form&nbsp;S-8 (collectively with the other
Form S-8s, the &ldquo;Registration Statements&rdquo;) filed by the Registrant with the Commission:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 24px; font-size: 10pt">&nbsp;</TD>
    <TD STYLE="width: 24px; font-size: 10pt"><FONT STYLE="font-size: 10pt">(i)</FONT></TD>
    <TD STYLE="font-size: 10pt"><FONT STYLE="font-size: 10pt">Registration Statement on Form&nbsp;S-8 filed by the Registrant with the Commission on June&nbsp;11, 2021 (File No.&nbsp;333-217871) with respect to 280,430 shares of its common stock, par value $0.001 per share (&ldquo;Common Stock&rdquo;) originally registered to be issued under the Applied Optoelectronics,&nbsp;Inc. Amended and Restated 2013 Equity Incentive Plan (as amended, the &ldquo;Amended and Restated 2013 Plan&rdquo;);</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 24px">&nbsp;</TD>
    <TD STYLE="width: 24px"><FONT STYLE="font-size: 10pt">(ii)</FONT></TD>
    <TD><FONT STYLE="font-size: 10pt">Registration Statement on Form&nbsp;S-8 filed by the Registrant with the Commission on June&nbsp;11, 2021 (File No.&nbsp;333-236831) with respect to 333,333 shares of Common Stock originally registered to be issued under the Amended and Restated 2013 Plan;</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 24px">&nbsp;</TD>
    <TD STYLE="width: 24px; font-size: 10pt"><FONT STYLE="font-size: 10pt">(iii)</FONT></TD>
    <TD STYLE="font-size: 10pt"><FONT STYLE="font-size: 10pt">Registration Statement on Form&nbsp;S-8 filed by the Registrant with the Commission on June&nbsp;11, 2021 (File No.&nbsp;333-230243) with respect to 333,333 shares of Common Stock originally registered to be issued under the Amended and Restated 2013 Plan; and</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 24px">&nbsp;</TD>
    <TD STYLE="width: 24px; font-size: 10pt"><FONT STYLE="font-size: 10pt">(iv)</FONT></TD>
    <TD STYLE="font-size: 10pt"><FONT STYLE="font-size: 10pt">Registration Statement on Form&nbsp;S-8 filed by the Registrant with the Commission on June 11, 2021 (File No.&nbsp;333-223347) with respect to 333,333 shares of Common Stock originally registered to be issued under the Amended and Restated 2013 Plan.</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="font-size: 10pt">&nbsp;</TD>
    <TD STYLE="font-size: 10pt">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="font-size: 10pt"><FONT STYLE="font-size: 10pt">(v)</FONT></TD>
    <TD STYLE="font-size: 10pt"><FONT STYLE="font-size: 10pt">Registration Statement on Form&nbsp;S-8 filed by the Registrant with the Commission on June 11, 2021 (File No.&nbsp;333-253534) with respect to 333,333 shares of Common Stock originally registered to be issued under the Amended and Restated 2013 Plan.</FONT></TD></TR>
  </TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">On June&nbsp;4, 2026, the stockholders of the Company
approved the Applied Optoelectronics,&nbsp;Inc. 2026 Equity Incentive Plan (the &ldquo;2026 Plan&rdquo;), which is the successor to the
Amended and Restated 2021 Plan, which succeeded the Applied Optoelectronics,&nbsp;Inc. 2013 Equity Incentive Plan (as amended, the &ldquo;Amended
and Restated 2013 Plan&rdquo; and together with the Amended and Restated 2021 Plan, the &ldquo;Prior Plans&rdquo;). No further awards
will be made under the Prior Plans.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">The number of shares of Common
Stock initially authorized for issuance pursuant to the awards under the 2026 Plan includes (a)&nbsp;2,500,000 new shares of Common Stock,
(b)&nbsp;418,418 shares of Common Stock available for issuance for future awards under the Prior Plans as of March 31, 2026, and (c)&nbsp;up
to 2,838,711 shares of Common Stock that are subject to outstanding awards under the Prior Plans as of March 31, 2026, to the extent such
shares would otherwise return to the share reserves of the Prior Plans (excluding shares tendered or withheld to pay the exercise or purchase
price of or withholding taxes due on an award granted under the Prior Plans) (such shares under clauses (b)&nbsp;and (c), the &ldquo;Carryover
Shares&rdquo;).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Contemporaneously with the
filing of this Post-Effective Amendment, the Registrant is filing a Registration Statement on Form&nbsp;S-8 to register the 2,500,000
newly authorized shares of Common Stock that have become available for issuance pursuant to the 2026 Plan, which number does not include
the Carryover Shares.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">In accordance with CFI 126.43
and pursuant to the undertaking in Item 512(a)(1)(iii)&nbsp;of Regulation S-K that the Registrant disclose a material change in the plan
of distribution as it was originally disclosed in the Registration Statements, this Post-Effective Amendment is filed to indicate that
the Registration Statements will also cover the issuance of the Carryover Shares under the 2026 Plan (as such shares would no longer be
issuable under the Prior Plans as described above). No additional securities are being registered by this Post-Effective Amendment.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>PART&nbsp;I</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>INFORMATION REQUIRED IN THE PROSPECTUS</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">The information specified
in Item 1 and Item 2 of Part&nbsp;I of Form&nbsp;S-8 is omitted from this Post-Effective Amendment in accordance with the provisions of
Rule&nbsp;428 under the Securities Act of 1933, as amended (the &quot;<B>Securities Act</B>&quot;), and the introductory note to Part&nbsp;I
of Form&nbsp;S-8. The documents containing the information specified in Part&nbsp;I of Form&nbsp;S-8 will be delivered to the participants
in the equity incentive plans covered by this Post-Effective Amendment as specified by Rule&nbsp;428(b)(1)&nbsp;under the Securities Act.
Such documents are not being filed with the Commission as part of this registration statement or as a prospectus or prospectus supplement
pursuant to Rule&nbsp;424. These documents and the documents incorporated by reference into this registration statement pursuant to Item
3 of Part&nbsp;II hereof, taken together, constitute a prospectus that meets the requirements of Section&nbsp;10(a)&nbsp;of the Securities
Act.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>PART&nbsp;II</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>INFORMATION REQUIRED IN THE REGISTRATION STATEMENT</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>Item 3. Incorporation of Documents by Reference.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.25in">The Registrant hereby incorporates
by reference into this Registration Statement the following documents previously filed with the Commission:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 0.5in">(a)</TD>
    <TD STYLE="text-align: justify">The Registrant&rsquo;s <A HREF="https://www.sec.gov/ix?doc=/Archives/edgar/data/1158114/000143774926005875/aaoi20251231_10k.htm" STYLE="-sec-extract: exhibit">Annual Report on Form&nbsp;10-K for its fiscal year ended December&nbsp;31, 2025</A> filed with the Commission on February&nbsp;26, 2026;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: justify">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD>(b)</TD>
    <TD STYLE="text-align: justify">The Registrant&rsquo;s Quarterly Report on <A HREF="https://www.sec.gov/ix?doc=/Archives/edgar/data/0001158114/000143774926015620/aaoi20260331_10q.htm" STYLE="-sec-extract: exhibit">Form&nbsp;10-Q for its fiscal quarter ended March&nbsp;31, 2026</A> filed with the Commission on May&nbsp;7, 2026;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: justify">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD>(c)</TD>
    <TD STYLE="text-align: justify"><FONT STYLE="font-size: 10pt">The Registrant&rsquo;s Current Reports on Form&nbsp;8-K filed with the Commission on <A HREF="https://www.sec.gov/ix?doc=/Archives/edgar/data/1158114/000168316826001184/aaoi_8k.htm" STYLE="-sec-extract: exhibit">February&nbsp;19, 2026</A>, <A HREF="https://www.sec.gov/ix?doc=/Archives/edgar/data/1158114/000168316826001315/aaoi_8k.htm" STYLE="-sec-extract: exhibit">February&nbsp;26, 2026</A>, <A HREF="https://www.sec.gov/ix?doc=/Archives/edgar/data/1158114/000168316826001360/aaoi_8k.htm" STYLE="-sec-extract: exhibit">February&nbsp;27, 2026</A>, <A HREF="https://www.sec.gov/ix?doc=/Archives/edgar/data/1158114/000168316826001522/aaoi_8k.htm" STYLE="-sec-extract: exhibit">March&nbsp;5, 2026</A>, <A HREF="https://www.sec.gov/ix?doc=/Archives/edgar/data/1158114/000110465926027101/tm268500d1_8k.htm" STYLE="-sec-extract: exhibit">March&nbsp;12, 2026</A>, <A HREF="https://www.sec.gov/ix?doc=/Archives/edgar/data/1158114/000168316826002858/aaoi_8k.htm" STYLE="-sec-extract: exhibit">April&nbsp;13, 2026</A>, <A HREF="https://www.sec.gov/ix?doc=/Archives/edgar/data/0001158114/000168316826003572/aaoi_8k.htm" STYLE="-sec-extract: exhibit">May&nbsp;8, 2026</A>, <A HREF="https://www.sec.gov/ix?doc=/Archives/edgar/data/0001158114/000168316826003817/aaoi_8k.htm" STYLE="-sec-extract: exhibit">May&nbsp;13, 2026</A>, <A HREF="https://www.sec.gov/ix?doc=/Archives/edgar/data/0001158114/000110465926061168/tm2614157d2_8k.htm" STYLE="-sec-extract: exhibit">May&nbsp;14, 2026</A></FONT> and <A HREF="https://www.sec.gov/ix?doc=/Archives/edgar/data/1158114/000168316826004596/aaoi_8k.htm" STYLE="-sec-extract: exhibit">June&nbsp;5, 2026</A><FONT STYLE="font-size: 10pt">;</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: justify">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD>(d)</TD>
    <TD STYLE="text-align: justify">The Registrant&rsquo;s <A HREF="https://www.sec.gov/ix?doc=/Archives/edgar/data/1158114/000110465926048559/tm261409-4_def14a.htm" STYLE="-sec-extract: exhibit">Definitive Proxy Statement on Schedule 14A, as filed with the Commission on April&nbsp;24, 2026</A>, as supplemented by the <A HREF="https://www.sec.gov/Archives/edgar/data/1158114/000110465926057566/tm2613365-1_defa14a.htm" STYLE="-sec-extract: exhibit">additional definitive proxy solicitation materials filed with the Commission on May&nbsp;8, 2026</A>; and</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: justify">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="font-size: 10pt; text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(e)</FONT></TD>
    <TD STYLE="font-size: 10pt; text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">The description of the Registrant&rsquo;s Common Stock set forth in <A HREF="https://www.sec.gov/Archives/edgar/data/1158114/000143774926005875/ex_921421.htm" STYLE="-sec-extract: exhibit">Exhibit&nbsp;4.6</A> of the Registrant&rsquo;s Annual Report on Form&nbsp;10-K for its fiscal year ended December&nbsp;31, 2025 filed with the Commission on February&nbsp;26, 2026, together with any amendment or report filed with the Commission for the purpose of updating such description.</FONT></TD></TR>
  </TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.25in">In addition, all documents
filed by the Registrant pursuant to Sections 13(a), 13(c), 14, or 15(d)&nbsp;of the Securities Exchange Act of 1934, as amended (the &ldquo;Exchange
Act&rdquo;) (excluding any portions thereof furnished by the Registrant, including, but not limited to, information furnished under Item
2.02 and Item 7.01 and any exhibits relating to Item 2.02 or Item 7.01 furnished under Item 9.01 of Form&nbsp;8-K&nbsp;and any certification
required by 18 U.S.C. &sect; 1350), subsequent to the filing of this Registration Statement and prior to the filing of a post-effective
amendment to this Registration Statement which indicates that all securities hereby offered have been sold or which deregisters all securities
then remaining unsold, shall be deemed to be incorporated by reference into this Registration Statement and to be a part hereof from the
date of filing of such documents.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.25in">Any statement contained in
this Registration Statement or in a document incorporated or deemed to be incorporated by reference in this Registration Statement shall
be deemed to be modified or superseded for purposes of this Registration Statement to the extent that a statement contained in this Registration
Statement or in any subsequently filed document that also is deemed to be incorporated by reference in this Registration Statement modifies
or supersedes such statement.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>Item 4. Description of Securities.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">Not applicable.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>Item 5. Interests of Named Experts and Counsel.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">Not applicable.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>Item 6. Indemnification of Directors and Officers.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.25in">Subsection (a)&nbsp;of Section&nbsp;145
of the General Corporation Law of the state of Delaware, or the DGCL, empowers a corporation to indemnify any person who was or is a party
or who is threatened to be made a party to any threatened, pending or completed action, suit or proceeding, whether civil, criminal, administrative
or investigative (other than an action by or in the right of the corporation) by reason of the fact that the person is or was a director,
officer, employee or agent of the corporation, or is or was serving at the request of the corporation as a director, officer, employee
or agent of another corporation, partnership, joint venture, trust or other enterprise, against expenses (including attorneys&rsquo; fees),
judgments, fines and amounts paid in settlement actually and reasonably incurred by the person in connection with such action, suit or
proceeding if the person acted in good faith and in a manner the person reasonably believed to be in or not opposed to the best interests
of the corporation, and, with respect to any criminal action or proceeding, had no reasonable cause to believe the person&rsquo;s conduct
was unlawful.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.25in">Subsection (b)&nbsp;of Section&nbsp;145
empowers a corporation to indemnify any person who was or is a party or is threatened to be made a party to any threatened, pending or
completed action or suit by or in the right of the corporation to procure a judgment in its favor by reason of the fact that the person
acted in any of the capacities set forth above, against expenses (including attorneys&rsquo; fees) actually and reasonably incurred by
the person in connection with the defense or settlement of such action or suit if the person acted in good faith and in a manner the person
reasonably believed to be in or not opposed to the best interests of the corporation, except that no indemnification shall be made in
respect of any claim, issue or matter as to which such person shall have been adjudged to be liable to the corporation unless and only
to the extent that the Court of Chancery or the court in which such action or suit was brought shall determine upon application that,
despite the adjudication of liability but in view of all the circumstances of the case, such person is fairly and reasonably entitled
to indemnity for such expenses which the Court of Chancery or such other court shall deem proper.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.25in">Subsection (e)&nbsp;of Section&nbsp;145
authorizes a corporation to pay expenses incurred by an officer or director in defending any civil or criminal action, suit or proceeding
in advance of the final disposition of such action, suit or proceeding upon receipt of an undertaking by or on behalf of such director
or officer to repay such amount if it shall ultimately be determined that such person is not entitled to be indemnified by the corporation
as authorized in Section&nbsp;145.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.25in">Section&nbsp;145 further
provides that to the extent a director, officer, employee or agent of a corporation has been successful on the merits or otherwise in
the defense of any action, suit or proceeding referred to in subsections (a)&nbsp;and (b)&nbsp;of Section&nbsp;145, or in defense of any
claim, issue or matter therein, such person shall be indemnified against expenses (including attorneys&rsquo; fees) actually and reasonably
incurred by such person in connection therewith; that indemnification provided for by Section&nbsp;145 shall not be deemed exclusive of
any other rights to which the indemnified party may be entitled; and the indemnification provided for by Section&nbsp;145 shall, unless
otherwise provided when authorized or ratified, continue as to a person who has ceased to be a director, officer, employee or agent and
shall inure to the benefit of such person&rsquo;s heirs, executors and administrators. Section&nbsp;145 also empowers the corporation
to purchase and maintain insurance on behalf of any person who is or was a director, officer, employee or agent of the corporation, or
is or was serving at the request of the corporation as a director, officer, employee or agent of another corporation, partnership, joint
venture, trust or other enterprise against any liability asserted against such person and incurred by such person in any such capacity,
or arising out of such person&rsquo;s status as such, whether or not the corporation would have the power to indemnify such person against
such liabilities under Section&nbsp;145.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.25in">Section&nbsp;102(b)(7)&nbsp;of
the DGCL has been amended to also permit a corporation's certificate of incorporation to eliminate or limit the personal liability of
certain officers of the corporation for monetary damages for breach of fiduciary duty as an officer, except for liability for any breach
of the duty of loyalty, any act or omission not in good faith or that involves intentional misconduct or a knowing violation of law, any
transaction from which the officer derived an improper personal benefit, or in any action brought by or in the right of the corporation.
The Registrant's restated certificate of incorporation does not currently include a provision eliminating or limiting officer liability.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.25in">Provisions in the Registrant&rsquo;s
restated certificate of incorporation and amended and restated bylaws, as amended, limit or eliminate the personal liability of the Registrant&rsquo;s
directors to the fullest extent permitted by the DGCL, as it now exists or may in the future be amended. Accordingly, a director will
not be personally liable to the Registrant or the Registrant&rsquo;s stockholders for monetary damages for breach of fiduciary duty as
a director, except for liability for:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.25in">&middot;&#9;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;any
breach of the director's duty of loyalty to the Registrant or the Registrant&rsquo;s stockholders;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.25in">&middot;&#9;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;any
act or omission not in good faith or that involves intentional misconduct or a knowing violation of law;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.25in">&middot;&#9;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;any
unlawful payments related to dividends or unlawful stock purchases, redemptions or other distributions under Section&nbsp;174 of the DGCL;
or</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.25in">&middot;&#9;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;any
transaction from which the director derived an improper personal benefit.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.25in">Any amendment, repeal or
modification of the liability limitation provisions of the restated certificate of incorporation shall not adversely affect any right
or protection existing at the time of such amendment with respect to acts or omissions occurring before such amendment.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.25in">These limitations of liability
do not alter director liability under the federal securities laws and do not affect the availability of equitable remedies such as an
injunction or rescission.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.25in">In addition, the Registrant&rsquo;s
amended and restated bylaws provide that:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.25in">&middot;&#9;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;the
Registrant will indemnify its directors, officers and, in the discretion of the Registrant&rsquo;s board of directors, certain non-officer
employees to the fullest extent permitted by the DGCL, as it now exists or may in the future be amended; and</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.25in">&middot;&#9;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;the
Registrant shall advance all expenses, including attorneys' fees and other costs customarily incurred in connection with a proceeding,
to its directors within 30 days after receipt of a written request and may advance expenses, in the discretion of the Registrant&rsquo;s
board of directors, to its officers and certain non-officer employees, in connection with any proceedings (including any civil, criminal,
administrative, investigative, arbitrative or other proceeding) relating to their service for or on behalf of the Registrant, subject
to limited exceptions.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.25in">The Registrant has entered
into indemnification agreements with each of its directors and certain of its executive officers. These agreements provide that the Registrant
will indemnify each of its directors and certain of its executive officers to the fullest extent permitted by Delaware law.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.25in">The Registrant also maintains
general liability insurance which covers certain liabilities of its directors and officers arising out of claims based on acts or omissions
in their capacities as directors or officers, including liabilities under the Securities Act.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="text-align: justify; font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.25in">Insofar as indemnification for liabilities arising
under the Securities Act may be permitted to directors, officers and controlling persons of the Company pursuant to the foregoing provisions,
the Company has been advised that in the opinion of the Commission such indemnification is against public policy as expressed in the Securities
Act and is therefore unenforceable.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>Item 7. Exemption from Registration Claimed.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">Not applicable.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>Item 8. Exhibits.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="border-bottom: black 1pt solid; text-align: center; width: 0.75in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Exhibit<BR> Number</FONT></TD>
    <TD STYLE="text-align: justify; width: 0.2in">&nbsp;</TD>
    <TD STYLE="text-align: justify; border-bottom: black 1pt solid"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Description</FONT></TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; text-align: center"><A HREF="https://www.sec.gov/Archives/edgar/data/1158114/000168316825004444/aaoi_ex0302.htm" STYLE="-sec-extract: exhibit"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">4.1</FONT></A></TD>
    <TD STYLE="text-align: justify; vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="text-align: justify; vertical-align: top"><A HREF="https://www.sec.gov/Archives/edgar/data/1158114/000168316825004444/aaoi_ex0302.htm" STYLE="-sec-extract: exhibit"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Restated Certificate of Incorporation<FONT><U STYLE="text-decoration: none">&nbsp;(filed as Exhibit&nbsp;3.2 to the Registrant's Current Report on Form&nbsp;8-K filed with the Securities and Exchange Commission on June&nbsp;12, 2025).</U></FONT></FONT></A></TD></TR>
  <TR>
    <TD STYLE="text-align: center; vertical-align: top"><A HREF="https://www.sec.gov/Archives/edgar/data/1158114/000101968713004306/aaoi_10q-ex0302.htm" STYLE="-sec-extract: exhibit"><FONT STYLE="text-decoration: none">4.2 </FONT></A></TD>
    <TD STYLE="text-align: justify; vertical-align: bottom"><FONT STYLE="text-decoration: none">&nbsp; &nbsp;</FONT></TD>
    <TD STYLE="text-align: justify; vertical-align: top"><A HREF="https://www.sec.gov/Archives/edgar/data/1158114/000101968713004306/aaoi_10q-ex0302.htm" STYLE="-sec-extract: exhibit"><FONT STYLE="text-decoration: none; font-family: Times New Roman, Times, Serif; font-size: 10pt">Amended and Restated Bylaws, as currently in effect (filed as Exhibit&nbsp;3.2 to the Registrant&rsquo;s Quarterly Report on Form&nbsp;10-Q filed with the Securities and Exchange Commission on November&nbsp;14, 2013).</FONT></A></TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; text-align: center"><A HREF="https://www.sec.gov/Archives/edgar/data/1158114/000110465925030932/tm2511114d1_ex3-1.htm" STYLE="-sec-extract: exhibit"><FONT STYLE="text-decoration: none; font-family: Times New Roman, Times, Serif; font-size: 10pt">4.3</FONT></A></TD>
    <TD STYLE="text-align: justify; vertical-align: bottom"><FONT STYLE="text-decoration: none">&nbsp;</FONT></TD>
    <TD STYLE="text-align: justify; vertical-align: top"><A HREF="https://www.sec.gov/Archives/edgar/data/1158114/000110465925030932/tm2511114d1_ex3-1.htm" STYLE="-sec-extract: exhibit"><FONT STYLE="text-decoration: none; font-family: Times New Roman, Times, Serif; font-size: 10pt">Amendment No.&nbsp;1 to the Amended and Restated Bylaws, as currently in effect (filed as Exhibit&nbsp;3.1 to the Registrant&rsquo;s Current Report on Form&nbsp;8-K filed with the Securities and Exchange Commission on April&nbsp;2, 2025).</FONT></A></TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; text-align: center"><A HREF="https://www.sec.gov/Archives/edgar/data/1158114/000110465916157015/a16-21428_1ex4d1.htm" STYLE="-sec-extract: exhibit"><FONT STYLE="text-decoration: none; font-family: Times New Roman, Times, Serif; font-size: 10pt">4.4</FONT></A></TD>
    <TD STYLE="text-align: justify; vertical-align: bottom"><FONT STYLE="text-decoration: none">&nbsp;</FONT></TD>
    <TD STYLE="text-align: justify; vertical-align: bottom"><A HREF="https://www.sec.gov/Archives/edgar/data/1158114/000110465916157015/a16-21428_1ex4d1.htm" STYLE="-sec-extract: exhibit"><FONT STYLE="text-decoration: none; font-family: Times New Roman, Times, Serif; font-size: 10pt">Common Stock Specimen (incorporated by reference to Exhibit&nbsp;4.1 to the Registrant&rsquo;s Current Report on Form&nbsp;8-K filed on November&nbsp;14, 2016 (File No.&nbsp;001-36083)).</FONT></A></TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; text-align: center"><A HREF="tm2616951d10_ex5-1.htm" STYLE="-sec-extract: exhibit"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">5.1*</FONT></A></TD>
    <TD STYLE="text-align: justify; vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="text-align: justify; vertical-align: bottom"><A HREF="tm2616951d10_ex5-1.htm" STYLE="-sec-extract: exhibit"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Opinion of Norton Rose Fulbright US LLP.</FONT></A></TD></TR>

<TR>
    <TD STYLE="vertical-align: top; text-align: center; width: 0.75in"><A HREF="tm2616951d10_ex5-1.htm" STYLE="-sec-extract: exhibit"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">23.1*</FONT></A></TD>
    <TD STYLE="text-align: justify; vertical-align: bottom; width: 0.2in">&nbsp;</TD>
    <TD STYLE="text-align: justify; vertical-align: bottom"><A HREF="tm2616951d10_ex5-1.htm" STYLE="-sec-extract: exhibit"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Consent of Norton Rose Fulbright US LLP (included in Exhibit&nbsp;5.1).</FONT></A></TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; text-align: center"><A HREF="tm2616951d10_ex23-2.htm" STYLE="-sec-extract: exhibit"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">23.2*</FONT></A></TD>
    <TD STYLE="text-align: justify; vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="text-align: justify; vertical-align: bottom"><A HREF="tm2616951d10_ex23-2.htm" STYLE="-sec-extract: exhibit"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Consent of Grant Thornton LLP, independent registered public accounting firm.</FONT></A></TD></TR>

<TR>
    <TD STYLE="vertical-align: top; text-align: center"><A HREF="#sabari_001"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">24.1*</FONT></A></TD>
    <TD STYLE="text-align: justify; vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="text-align: justify; vertical-align: bottom"><A HREF="#sabari_001"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Powers of Attorney (included on the signature page hereto).</FONT></A></TD></TR>

  <TR>
    <TD STYLE="vertical-align: top; text-align: center"><A HREF="https://www.sec.gov/Archives/edgar/data/1158114/000155837017001556/aaoi-20161231ex10640a0a4.htm" STYLE="-sec-extract: exhibit">99.1</A></TD>
    <TD STYLE="vertical-align: bottom; text-align: justify">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; text-align: justify"><A HREF="https://www.sec.gov/Archives/edgar/data/1158114/000155837017001556/aaoi-20161231ex10640a0a4.htm" STYLE="-sec-extract: exhibit"><FONT STYLE="font-size: 10pt">Applied Optoelectronics, Inc. Amended and Restated 2013 Stock Incentive Plan (incorporated by reference from Exhibit 10.6 to the Registrant's Form 10-K filed on March&nbsp;9, 2017 (File No. 001-36083)). &nbsp;</FONT></A></TD></TR>

<TR>
    <TD STYLE="vertical-align: top; text-align: center; width: 0.75in"><A HREF="https://www.sec.gov/Archives/edgar/data/1158114/000168316823004080/aaoi_ex1010.htm" STYLE="-sec-extract: exhibit"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">99.2</FONT></A></TD>
    <TD STYLE="text-align: justify; vertical-align: bottom; width: 0.2in">&nbsp;</TD>
    <TD STYLE="text-align: justify; vertical-align: bottom"><A HREF="https://www.sec.gov/Archives/edgar/data/1158114/000168316823004080/aaoi_ex1010.htm" STYLE="-sec-extract: exhibit"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Applied Optoelectronics,&nbsp;Inc. 2021 Equity Incentive Plan, as amended (incorporated by reference to Exhibit&nbsp;10.1 to the Registrant's Form&nbsp;8-K filed on June&nbsp;12, 2023).</FONT></A></TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; text-align: center"><A HREF="https://www.sec.gov/Archives/edgar/data/1158114/000168316826004596/aaoi_ex1001.htm" STYLE="-sec-extract: exhibit"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">99.3</FONT></A></TD>
    <TD STYLE="text-align: justify; vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="text-align: justify; vertical-align: bottom"><A HREF="https://www.sec.gov/Archives/edgar/data/1158114/000168316826004596/aaoi_ex1001.htm" STYLE="-sec-extract: exhibit"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Applied Optoelectronics,&nbsp;Inc. 2026 Equity Incentive Plan (incorporated by reference to Exhibit&nbsp;10.1 to the Registrant&rsquo;s Form&nbsp;8-K filed on June&nbsp;5, 2026).</FONT></A></TD></TR>
  </TABLE>


<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">* Filed herewith.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>Item 9. Undertakings.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">(a)&nbsp;The undersigned Registrant hereby undertakes:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">(1)&nbsp;To file, during any period in which offers
or sales are being made, a post-effective amendment to this Registration Statement:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">(i)&nbsp;To include any prospectus required by
Section&nbsp;10(a)(3)&nbsp;of the Securities Act;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">(ii)&nbsp;To reflect in the prospectus any facts
or events arising after the effective date of the Registration Statement (or the most recent post-effective amendment thereof) which,
individually or in the aggregate, represent a fundamental change in the information set forth in the Registration Statement. Notwithstanding
the foregoing, any increase or decrease in volume of securities offered (if the total dollar value of securities offered would not exceed
that which was registered) and any deviation from the low or high end of the estimated maximum offering range may be reflected in the
form of prospectus filed with the Commission pursuant to Rule&nbsp;424(b)&nbsp;if, in the aggregate, the changes in volume and price represent
no more than a 20% change in the maximum aggregate offering price set forth in the &ldquo;Calculation of Registration Fee&rdquo; table
in the effective Registration Statement; and</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">(iii)&nbsp;To include any material information
with respect to the plan of distribution not previously disclosed in the Registration Statement or any material change to such information
in the Registration Statement;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><I>provided, however</I>, that paragraphs (a)(1)(i)&nbsp;and (a)(1)(ii)&nbsp;of
this section do not apply if the registration statement is on Form&nbsp;S-8, and the information required to be included in a post-effective
amendment by those paragraphs is contained in reports filed with or furnished to the Commission by the Registrant pursuant to Section&nbsp;13
or Section&nbsp;15(d)&nbsp;of the Exchange Act that are incorporated by reference in this Registration Statement.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">(2)&nbsp;That, for the purpose of determining any
liability under the Securities Act, each such post-effective amendment shall be deemed to be a new registration statement relating to
the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering
thereof.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">(3)&nbsp;To remove from registration by means of
a post-effective amendment any of the securities being registered which remain unsold at the termination of the offering.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">(b)&nbsp;The undersigned Registrant hereby undertakes that, for purposes
of determining any liability under the Securities Act, each filing of the Registrant&rsquo;s annual report pursuant to Section&nbsp;13(a)&nbsp;or
Section&nbsp;15(d)&nbsp;of the Exchange Act (and, where applicable, each filing of an employee benefit plan&rsquo;s annual report pursuant
to Section&nbsp;15(d)&nbsp;of the Exchange Act) that is incorporated by reference in this registration statement shall be deemed to be
a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed
to be the initial bona fide offering thereof.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">(c)&nbsp;Insofar as indemnification for liabilities arising under the
Securities Act may be permitted to directors, officers and controlling persons of the Registrant pursuant to the foregoing provisions,
or otherwise, the Registrant has been advised that in the opinion of the Securities and Exchange Commission such indemnification is against
public policy as expressed in the Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities
(other than the payment by the Registrant of expenses incurred or paid by a director, officer or controlling person of the Registrant
in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection
with the securities being registered, the Registrant will, unless in the opinion of its counsel the matter has been settled by controlling
precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed
in the Act and will be governed by the final adjudication of such issue.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><A NAME="sabari_001"></A><B>SIGNATURES</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Pursuant to the requirements of the Securities Act of 1933, the Registrant
certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form&nbsp;S-8 and has duly caused
this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Sugar Land, State
of Texas on June&nbsp;9, 2026.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD COLSPAN="2"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">APPLIED OPTOELECTRONICS,&nbsp;INC. </FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 50%">&nbsp;</TD>
    <TD STYLE="width: 3%">&nbsp;</TD>
    <TD STYLE="width: 47%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">By: </FONT></TD>
    <TD STYLE="border-bottom: black 1pt solid"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">/S/ CHIH-HSIANG (THOMPSON) LIN </FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">CHIH-HSIANG (THOMPSON) LIN </FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><I>President and Chief Executive Officer</I></FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>POWER OF ATTORNEY</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.25in">KNOW ALL PERSONS BY THESE
PRESENTS, that each person whose signature appears below constitutes and appoints Chih-Hsiang (Thompson) Lin and Dr.&nbsp;Stefan J. Murry,
and each of them, his true and lawful attorneys-in-fact and agents, with full power of substitution, for him and in his name, place and
stead, in any and all capacities, to sign any and all amendments (including post-effective amendments) to this registration statement
and to file the same with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission,
granting unto said attorneys-in-fact and agents full power and authority to do and perform each and every act and thing requisite and
necessary to be done in connection therewith, as fully and to all intents and purposes as they might or could do in person, hereby ratifying
and confirming all that said attorneys-in-fact and agents or any of them, or their or his substitute or substitutes may lawfully do or
cause to be done by virtue hereof.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.25in">Pursuant to the requirements
of the Securities Act of 1933, this registration statement has been signed by the following persons in the capacities and on the date
indicated.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR>
    <TD STYLE="vertical-align: top; text-align: center; width: 83%"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>Signature</B></FONT></TD>
    <TD STYLE="width: 2%">&nbsp;</TD>
    <TD STYLE="text-align: center; width: 15%"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>Date</B></FONT></TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; border-bottom: black 1pt solid; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt; text-transform: uppercase">/s/ Chih-Hsiang (Thompson) Lin</FONT></TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">June&nbsp;9, 2026</FONT></TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt; font-variant: small-caps">Chih-Hsiang (Thompson) Lin</FONT></TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><I>President, Chief Executive Officer and Chairman of the Board of Directors</I></FONT></TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><I>(Principal Executive Officer)</I></FONT></TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; border-bottom: black 1pt solid; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt; text-transform: uppercase">/s/ STEFAN J. MURRY</FONT></TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">June&nbsp;9, 2026</FONT></TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt; font-variant: small-caps">Stefan J. Murry</FONT></TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><I>Chief Financial Officer</I></FONT></TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><I>(Principal Financial Officer and Principal Accounting Officer)</I></FONT></TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; border-bottom: black 1pt solid; text-align: center">/S/ WILLIAM H. YEH</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">June&nbsp;9, 2026</FONT></TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt; font-variant: small-caps">William H. Yeh</FONT></TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><I>Director</I></FONT></TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; border-bottom: black 1pt solid; text-align: center">/S/ RICHARD B. BLACK</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">June&nbsp;9, 2026</FONT></TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt; font-variant: small-caps">Richard B. Black</FONT></TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><I>Director</I></FONT></TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; border-bottom: black 1pt solid; text-align: center">/S/ CHE-WEI LIN</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">June&nbsp;9, 2026</FONT></TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt; font-variant: small-caps">Che-Wei Lin</FONT></TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><I>Director</I></FONT></TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; border-bottom: black 1pt solid; text-align: center">/S/ MIN-CHU (MIKE) CHEN</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">June&nbsp;9, 2026</FONT></TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt; font-variant: small-caps">Min-Chu (Mike) Chen</FONT></TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><I>Director</I></FONT></TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; border-bottom: black 1pt solid; text-align: center">/S/ CYNTHIA (CINDY) DELANEY</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">June&nbsp;9, 2026</FONT></TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt; font-variant: small-caps">Cynthia (Cindy) DeLaney</FONT></TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><I>Director</I></FONT></TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; border-bottom: black 1pt solid; text-align: center">/S/ ROBERT (BOB) FLANAGAN</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">June&nbsp;9, 2026</FONT></TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt; font-variant: small-caps">Robert (Bob) Flanagan</FONT></TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><I>Director</I></FONT></TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"></P>

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<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>2
<FILENAME>tm2616951d10_ex5-1.htm
<DESCRIPTION>EXHIBIT 5.1
<TEXT>
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<P STYLE="text-align: right; margin: 0"><B>Exhibit 5.1</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; text-align: right; margin-top: 0pt; margin-bottom: 0pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 10pt Times New Roman, Times, Serif; width: 100%">
  <TR STYLE="vertical-align: top; text-align: left">
    <TD STYLE="width: 70%">&nbsp;</TD>
    <TD STYLE="width: 30%"><IMG SRC="tm2616951d2_ex5-1img001.jpg" ALT=""></TD></TR>
  <TR STYLE="vertical-align: top; text-align: left">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top; text-align: left">
    <TD>&nbsp;</TD>
    <TD>Norton Rose Fulbright US LLP<BR> 1550 Lamar Street, Suite 2000<BR> Houston, Texas 77010-4106<BR> United States of America<BR>
<BR>
Tel +1 713 651 5151<BR> nortonrosefulbright.com</TD></TR>
  </TABLE>


<P STYLE="font: 10pt Times New Roman, Times, Serif; text-align: right; margin-top: 0pt; margin-bottom: 0pt"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">June 9, 2026</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Applied Optoelectronics, Inc.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">13139 Jess Pirtle Blvd.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Sugar Land, TX 77478</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: -0.25in">Re: <U>Post-Effective Amendments to
Registration Statements on Form S-8 of Applied Optoelectronics, Inc.</U></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Ladies and Gentlemen:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">We have acted as special counsel
to Applied Optoelectronics, Inc., a Delaware corporation (the &ldquo;Company&rdquo;), in connection with the preparation of the Company&rsquo;s
Post-Effective Amendments No. 1 to the Registration Statements on Form S-8, Registration Nos. 333-257009, 333-265711, 333-272928 and 333-286464,
and Post-Effective Amendments No. 2 to the Registration Statements on Form S-8, Registration Nos. 333-217871, 333-236831, 333-230243,
333-223347 and 333-253534 (collectively, the <B>&ldquo;Post-Effective Amendments&rdquo;</B>) to be filed by the Company with the U.S.
Securities and Exchange Commission under the Securities Act of 1933, as amended. The Post-Effective Amendments reflect the number of shares
of the Company&rsquo;s common stock, par value $0.001 per share (the &ldquo;<B>Common Stock</B>&rdquo;) including (a) 418,418 shares of
Common Stock that remained available for issuance under the Applied Optoelectronics, Inc. 2013 Equity Incentive Plan (as amended, the
 &ldquo;<B>Amended and Restated 2013 Plan</B>&rdquo;) and the Applied Optoelectronics, Inc. 2021 Equity Incentive Plan (as amended, the
 &ldquo;<B>Amended and Restated 2021 Plan</B>&rdquo; and together with the Amended and Restated 2013 Plan, the &ldquo;<B>Prior Plans</B>&rdquo;)
as of March 31, 2026, and (b) up to 2,838,711 shares of Common Stock that are subject to outstanding awards under the Prior Plans as of
March 31, 2026, to the extent such shares would otherwise return to the share reserves of the Prior Plans (excluding shares tendered or
withheld to pay the exercise or purchase price of or withholding taxes due on an award granted under the Prior Plans) (such shares under
clauses (a) and (b), the &ldquo;<B>Carryover Shares</B>&rdquo;) that may become available for issuance under the Applied Optoelectronics,
Inc. 2026 Equity Incentive Plan (the <B>&ldquo;2026 Plan&rdquo;</B>). On June 4, 2026, the stockholders of the Company approved the 2026
Plan.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">We have examined the restated certificate of incorporation
and amended and restated by-laws, as amended, of the Company, each as amended and restated to date, and originals, or copies certified
to our satisfaction, of all pertinent records of the meetings of the board of directors and stockholders of the Company, the Post-Effective
Amendments, the 2026 Plan and such other documents relating to the Company as we have deemed material for the purposes of this opinion.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">In our examination of the foregoing documents,
we have assumed the genuineness of all signatures, the authenticity of all documents submitted to us as originals, the conformity to original
documents of all documents submitted to us as certified, photostatic or other copies, the authenticity of the originals of any such documents
and the legal competence of all signatories to such documents.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">We assume that the appropriate action will be
taken, prior to the offer and sale of the Carryover Shares in accordance with the 2026 Plan, to register and qualify the Carryover Shares
for sale under all applicable state securities or &ldquo;blue sky&rdquo; laws. For purposes of the opinions set forth below, we have further
assumed that no event occurs that causes the number of authorized shares of the Company&rsquo;s Common Stock available for issuance by
the Company to be less than the number of then unissued shares.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">We express no opinion herein as to the laws of
any state or jurisdiction other than the General Corporation Law of the State of Delaware.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>



<P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-size: 8pt">Norton Rose Fulbright US LLP is a limited
liability partnership registered under the laws of Texas.</FONT></P>

<P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-size: 8pt">&nbsp;</FONT></P>

<P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-size: 8pt">Norton Rose Fulbright LLP, Norton Rose
Fulbright Canada LLP, and Norton Rose Fulbright US LLP are separate legal entities and all of them are members of Norton Rose Fulbright
Verein, a Swiss verein. Norton Rose Fulbright Verein helps coordinate the activities of the members but does not itself provide legal
services to clients. Details of each entity, with certain regulatory information, are available at nortonrosefulbright.com/legal-notices.</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>



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  <TR STYLE="font-size: 10pt; vertical-align: bottom">
    <TD STYLE="width: 50%; font: 10pt Times New Roman, Times, Serif">June 9, 2026<BR> Page 2</TD>
    <TD STYLE="text-align: right; font-size: 10pt; width: 50%; vertical-align: top">&nbsp;<IMG SRC="tm2616951d2_ex5-1img002.jpg" ALT=""></TD></TR>
  </TABLE>




<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">It is understood that this opinion is to be used
only in connection with the offer and sale of the Carryover Shares while the Registration Statements to which the Post-Effective Amendments
relates are in effect.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Please note that we are opining only as to the
matters expressly set forth herein, and no opinion should be inferred as to any other matters.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Based on the foregoing, we are of the opinion that the Carryover Shares
have been duly authorized for issuance and, when the Carryover Shares are issued and paid for in accordance with the terms and conditions
of the 2026 Plan and pursuant to the agreements that accompany the 2026 Plan, the Carryover Shares will be validly issued, fully paid
and nonassessable.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">We hereby consent to the filing of this opinion with the Commission
in connection with the Post-Effective Amendments in accordance with the requirements of Item 601(b)(5) of Regulation S-K under the Securities
Act. In giving such consent, we do not hereby admit that we are in the category of persons whose consent is required under Section 7 of
the Securities Act or the rules and regulations of the Commission.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Very truly yours,</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">/s/ Norton Rose Fulbright US LLP</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Norton Rose Fulbright US LLP</P>

<P STYLE="margin: 0">&nbsp;</P>

<P STYLE="margin: 0"></P>

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<DOCUMENT>
<TYPE>EX-23.2
<SEQUENCE>3
<FILENAME>tm2616951d10_ex23-2.htm
<DESCRIPTION>EXHIBIT 23.2
<TEXT>
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<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right">Exhibit 23.2</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING
FIRM</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">We have issued our reports dated February 26, 2026 with respect to
the consolidated financial statements and internal control over financial reporting of Applied Optoelectronics, Inc. included in the Annual
Report on Form 10-K for the year ended December 31, 2025, which are incorporated by reference in these Registration Statements (as amended).
We consent to the incorporation by reference of the aforementioned reports in these Registration Statements (as amended).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">/s/ GRANT THORNTON LLP</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Houston, Texas</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">June 9, 2026</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

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<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>tm2616951d2_ex5-1img001.jpg
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