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A linear lightwave Benes network

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2 Author(s)
G. R. Pieris ; Dept. of Electr. & Comput. Eng., Texas Univ., Austin, TX, USA ; G. H. Sasaki

The authors consider linear lightwave networks with a single waveband that have N inputs, each with a transmitter, and N outputs, each with a receiver, interconnected by optical links, broadcast stars, and wavelength-independent 2×2 switches. The transmitters and receivers can tune to C different wavelengths. The authors describe a rearrangeably nonblocking network that is a modification of the Benes network and uses transmitters that are fixed tuned and switches with two states. The network uses [1+o(1)] N/log2(N/C) switches, which is shown to be nearly the minimum number. It is also shown that, if C =o(log N), then a rearrangeably nonblocking network requires [1+o(1)]Nlog2N switches even if the switches have more than two states

Published in:

IEEE/ACM Transactions on Networking  (Volume:1 ,  Issue: 4 )