"We attribute this [stock volatility] to some investors’ belief that VCSELs would represent a significant revenue opportunity in 2017 for II-VI. The plan is for II-VI to transfer the VCSEL process to its ANADIGICS fab in Warren, New Jersey. However, from our direct experience in a wafer fab, the combined transfer of a manufacturing process to an overseas fab on a larger-sized wafer can be challenging. As such, we caution investors about assuming instant gratification, as we believe it will take six to nine months to produce a high-yielding U.S. manufacturing process. In our recent meetings with investors, II-VI management emphasized that its U.S. VCSEL ramp will primarily occur in 2018. Also, the intro of Samsung’s Galaxy S8 phone did not include VCSEL-based sensing technology. While we believe these reports have recently pressured II-VI’s shares, we believe potential iPhone 8 delays, concerns about Lumentum and Finisar meeting the iPhone 8 VCSEL ramp and Samsung’s decision to hold off on VCSEL-based sensors are rather good news for II-VI, and potentially bad news for the assumed first movers: Lumentum and Finisar. Thus, we would use any weakness as a buying opportunity"

What VCSEL process is II-VI transferring to the Anadigics Fab in Warren, NJ? It says "an overseas fab" - from their facility in Switzerland? or Singapore?

And there timeline for VCSEL ramp up in 2018 is very similar to Poet's. Some interesting points made in this article.