I didn't reply for 2 reasons - first, I have a life. I do other things than monitor this board all day.
Second, you asked if I know what hurdles remain for plasmonics. The question is, do you? And you say that "skepticism" about plasmonics is reasonable. The question I am asking is what is that skepticism based on? You have not provided any justification for your skepticism. I provided technical information from a patent and an opinion based on the fact that Polariton is conducting Telcordia testing on a device right now. You've provided nothing.