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Using Light and Photons for Communication in Digital Systems
Nature doesn't seem to be telling us that we can combine light sources with digital switches for conventional digital computing. It's very difficult to get those compound semiconductor light sources situated with your silicon because of high temperatures. So you have some, I would say a great deal of architectural limitations that are introduced by that sort of package level integration as opposed to monolithic on the same chip integration. But it's still a very useful thing to do.