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To: BDR who wrote (30623)	8/29/2000 11:31:45 AM
From: BDR	Read Replies (3) \| Respond to of 54805

All Optical Switches Once upon a time there was some discussion of optical switching on this thread. Here is a report on possibly some progress but it still doesn't sound like an "intelligent switch": lightreading.com Getting a hint of what Corvis might be using to build its optical switch is quite a coup. Huber has been very tight-lipped about it. Even telecom operators that are trialing Corvis’s equipment have had a hard time getting him to divulge details. It's known to be the only all-optical switch to be anywhere close to deployment, and it's also known to have a relatively low number of ports, but that's about it. This sketchy description could fit a switch based on Iolon's developments. Iolon is using MEMS (micro-electro-mechnical systems), but it’s not following in the footsteps of startups like Calient Networks Inc. and Xros, the startup bought by Nortel Networks, who are developing giant arrays of tiny tilting mirrors for very large switches, ones with 1,000 or more ports. Iolon is developing a tiny 1-by-4 switch that would be installed on a circuit board in a more modestly sized switch, like Corvis’s.