Remarkable:

The PET-ability disappeared completely. Like the video clip: "Charging twice a week."

So there I see two options:

1.: (not likely): CMOS on GaAs just did not work out. The RO failed.

2.: "Please stop talking or even thinking about it - for now!!!" (TB, from behind the curtain).

Question: Is PET a part in our VCSEL transceiver? Ah!!!