That was an awesome video Green! And a great post too - unfortunately I can't give more than one thumbs up:( I like the idea that the p-channel can mitigate the n-channel in degrees. I was thinking of it as an all or none thing.

Although I did get confirmation that part of what makes POET special is what they have managed with the p-channel, I think even in Si the p-channel was always slower. So it is possibly true that the p channel speed may not need to be a perfect match with the n-channel. Further developments in Si have led to an increase in the hole mobility, so it stnds to reason that the same could be done with GaAs given enough R&D. This is what Taylor has apparently done.

I also like your theory that the p-channel wasn't reduced with then-channel becasue it didn't really need to be in order to do it's job. I was even entertaining the idea that the p-channel reduction was on hold, being such an important development, so that he could continue his work in developing the optical capabilities. But I even recall reading one of the patents which suggests that the formation of the two transistors *is* the optical thyristor. But I have to look abck again when I get the time to make sure I didn't misread.

Thanks again for a great post