To be fair FJ, when you spell it out like that, I'm not surprised people don't understand. Lots of those terms used, like Multiplexers and LAN WDM are a complete unknown to most. I'd wager lots of people haven't a clue as to their function and therefore value in the market. Not to mention, what the hell is the meaning of a dielectric spot-size converter and lens-less packaging, and how this converts into a tangible advantage to these products. 

I supose this lack of understanding is partly the cause of why investors stay clear of Ptk.