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User Rank: Light Beer
12/4/2012 | 10:56:00 PM
re: What's Next for Kestrel?
"We are looking at the possibility of developing subsystem relationships with other companies that do not compete with our 10-Gbit/s product."

Ah well. I saw Kestrel entering into licensing agreements for its technology as its one avenue out. FDM, in theory, can make a nice access-type muxing solution, certainly cheaper than TDM-based solution.
But now that cheap CWDM (particularly pluggable transceiver modules)seems to be growing slowly, I wonder if FDM has a future...
User Rank: Light Beer
12/4/2012 | 10:55:39 PM
re: What's Next for Kestrel?
As I remember, optical output from an FDM laser is very similar to AM modulation used in cable TV applications. I used to work with a lot of CATV applications. The lasers are pre-distorted and there are a LOT of "out of spec" or "undefined" issues that pop up every couple of months. It is closer to a black art than a science. In my view it does not meet real telecom reliablity. Sooooo, I certainly wouldn't put money on RBOCs signing up for this sort of technology at the core of there metro network. (PS: I understand there are fundamental differences between AM and FDM in the electrical world, but the laser outputs are still basically multi-level analog with similar issues).

If I were a VC, this would have been a fundamental issues raised on day-one. I suspect this issue continues to follow Kestral.
User Rank: Light Beer
12/4/2012 | 10:48:42 PM
re: What's Next for Kestrel?
Good observation, but I disagree with your lack of confidence in the technical performance. There were yield problems for "analog" lasers in the early 90s, but today the technology is well understood and very reliable. The transmitters that Kestrel (and Centerpoint) need are lower performance than those used in CATV, because the signal content is digital (like satellite signals), not analog. Personally, I don't understand the carriers not buying this stuff. Maybe they don't know how successful cable companies have been with "analog" lasers.

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