Agreed, there’s likely much more to the 4th terminal than meets the eye.  Perhaps a decreased sense of urgency places us in a slightly better bargaining position with respect to the terms of the supposed ISRO deal.

And, some additional clues to the future of Denselight in these job postings.  Not sure if these are current or a bit stale, but are on POET’s website.

Waveguide optics Engineer - under responsibilities:

”renders major contribution in transforming Denselight APT (Assembly, packaging & Test Process) operations to a world-class Hybrid PIC (Photonics Integrated Circiuts) manufacturing operation” 

https://poet-technologies.com/docs/careers/Photonics%20Packaging%20R&D%20Engineer.pdf

https://poet-technologies.com/docs/careers/Waveguide%20Optics%20R&D%20Engineer.pdf