Exhibit 23.2

INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM’S CONSENT

We consent to the incorporation by reference in this Registration Statement on Form F-3 of our report dated March 15, 2024 relating to the consolidated financial statements appearing in the Annual Report on Form 20-F of POET Technologies Inc. for the year ended December 31, 2024. We also consent to the reference to us under the heading “Experts” in such Registration Statement.

/s/ Marcum llp

Hartford, CT

November 28, 2025