1. What happened to PET? Is it completly abandond for the moment? When was the last mention of PET?

Yes and no. Remember PET was POET without optics. However, management built a whole strategy around optics, so leaving out optics would make no sense. Old management focused on the electronics side, but they'd have had a hard time trying to enter a Red Ocean market, even if they had a superior technology.

This does in no way mean to wave electronics good bye! Not at all! Integration of optics and electronics is key and one of POET's foundations of success. Electronics is heavily needed, and what e.g. the VCSEL transceiver makes to stand out from competition is the integration of both optics and electronics, in addition to its superior optical properties.

Giving up PET doesn't mean to replace it by POT (no pun intended), but to deploy the full spectrum and the full potential of POET's optical and electronical capabilities.

2. What about the cooperation with Synopsys? (http://www.marketwired.com/press-release/poet-technologies-synopsys-collaborate-on-advanced-modeling-planar-electrical-technology-tsx-venture-ptk-1942916.htm)

Still ongoing, as far as we know. POET wouldn't be able to effectively and efficiently develop solutions without EDA tools like those of Synopsys. And very likely characterization results of actual devices are fed back into the tools' physical models in order to receive improved simulation results in future and make surprises more unlikely – even good ones like the photodetector.