Listen to one of the presentations, ol' GaAs was addressed, VCSEL's are still possible, if needed.
Not on the roadmap for now, but perhaps later on it may come to pass. The Optical interconnect - Data centers and network infrastructure need to be adjusted worldwide in the next decade to implement 5G, or by then even 6G. Either way The Optical Interposer, Receive & Transmit Transceivers, Optical Engines and other components will be in hot demand, no matter how you try to badmouth it down. People see right thru it man, give it a rest will ya?!
Revenue projections are on target for summer next year, with NRE to specific projects in the meantime, to build those products, to be precise. With NRE in combination with Warrant conversion between now and then the company should be able to operate itself to a more heavier increasing revenue stream! One European contract in our pocket, a deal with Sanan is imminent (Asia region) and a Tier-1 USA Telecom operator following suit, so you won't catch any flies with vinegar son...
Open your eyes and see... you gotta be in it to win it, good luck!