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Cover - shares
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Entity Addresses [Line Items]    
Document Type 20-F  
Amendment Flag false  
Document Registration Statement false  
Document Annual Report true  
Document Transition Report false  
Document Shell Company Report false  
Document Period End Date Dec. 31, 2024  
Document Fiscal Period Focus FY  
Document Fiscal Year Focus 2024  
Current Fiscal Year End Date --12-31  
Entity File Number 001-41319  
Entity Registrant Name POET TECHNOLOGIES INC.  
Entity Central Index Key 0001437424  
Entity Incorporation, State or Country Code A6  
Entity Address, Address Line One 1107 – 120 Eglinton Avenue East  
Entity Address, City or Town Toronto  
Entity Address, State or Province ON  
Entity Address, Country CA  
Entity Address, Postal Zip Code M4P 1E2  
Title of 12(b) Security Common Shares, no par value  
Trading Symbol POET  
Security Exchange Name NASDAQ  
Entity Well-known Seasoned Issuer No  
Entity Voluntary Filers No  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Accelerated Filer  
Entity Emerging Growth Company false  
Document Accounting Standard International Financial Reporting Standards  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding 76,507,157  
ICFR Auditor Attestation Flag true  
Document Financial Statement Error Correction [Flag] false  
Auditor Location Vancouver, Canada Hartford, CT
Auditor Name Davidson and Company LLP Marcum LLP
Auditor Firm ID 731 668
Business Contact [Member]    
Entity Addresses [Line Items]    
Entity Address, Address Line One 1107 – 120 Eglinton Avenue East  
Entity Address, City or Town Toronto  
Entity Address, State or Province ON  
Entity Address, Country CA  
Entity Address, Postal Zip Code M4P 1E2  
City Area Code 416  
Local Phone Number 368 9411  
Contact Personnel Name Suresh Venkatesan, CEO  
Contact Personnel Email Address svv@poet-technologies.com