Sunday, November 20, 2005

Light chips

New Scientist Silicon chip works on the speed of light - Breaking News

Seems like it was just two weeks ago when the possiblity of computers made of light was brought up. Oh wait, it was. IBM has made a prototype switching chip using photon waveguides which can slow down light, with the idea that such a device could synchronise data streams by slowing some streams, allowing others to catch up. However heating the waveguides takes a long time compared with the switching speed needed in an optical network. And the waveguides have to be carved with an accuracy of 1 nanometre.

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