Abstract

A concept for parallel optoelectronic bus-type interconnections (many participants–many participants) is given. The choices between multimode and single-mode fan-ins in free-space optical systems are discussed. When one single space-invariant multiple beam-splitting system is used for fan-out and fan-in simultaneously, the energy requirements for communications scale with 2N (for N participants on each busline), which is compared with N2 for space-variant systems. A simple demonstration experiment with a Dammann grating used as a multiple beam splitter is shown, and in a design example the theoretical performance is discussed.

© 1992 Optical Society of America

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