That's quite possible as to what is happening: proceed ahead with the "detector" on one type of epitaxial proprietory recipe and keep the optimization of the VCSEL on a different path. Perhaps, many were affixated on the illusion that all of this could be done on one "super epataxial" stack. Perhaps, this is what our management was alluding to in the last NR without giving away any details as they have to remain secret about epataxial recipes anyhow?

Monolithic