To: ahhaha who wrote (581 ) 2/21/2000 11:14:00 PM From: Webster Groves Read Replies (2) | Respond to of 626
Mr. Ahhaha, What we need to do here is separate the wheat from the chaff, and in SR's case to see if there is any wheat at all. Roses are red, and violets are blue, but when you modulate it's neither of the two. (I made that up myself.) My point is that although one could have a monochromatic green laser signal, and later change it to red (through various techniques), during the changing time the signal has a broad bandwidth. It's the time rate of change of frequency (for FM modulation) that carries the information, not the frequency (or color) of the carrier. No change - no data carried (talk to Shannon about this). Microwave modulation of optical beams is nothing new. The nonlinear index of refraction of many crystals such as LiNiO3 crystals and TiO2 can be used to generate sum and difference frequencies between appropriate optical beams, and between optical and RF inputs. A waveguide loaded with such a nonlinear crystal is a simple way of effecting the mixing of signals. RF sideband signals up to 10-20 GHz BANDWIDTH are not a challenge these days - for anybody in the business. Other devices, in particular, MIM diodes, can be used to add monochromatic 30 THz and 300 THz signals via the I/V nonlinearity. This is a far cry from impressing a 30 THZ bandwidth on a 300 THz carrier. I see no need to "give myself a way out" as you put it. There are two questions here: (1) are SR's claims scientifically valid, and (2) if they are valid then can they do it. I contend that the unique contribution of SR to the issue is their gobbledgook doubletalk, with NO scientific validity. Arbitrary references to publications of others do not validate SR's claims. Soliton pulses have been traveling on cables under the Atlantic for years, but what does this have to do with SR ? I'm going to read ahead here and predict that the next "scientific" mumbo-jumbo from these guys will be a new way around Bell's inequality that will pave SR's driveway with gold. Let's wait a year and see ... if the VC boys still have patience. - wg