THE MATRIX ANALYSIS FOR AN OPTICAL FREE-SPACE SWITCHING NETWORK AND AN OPTICAL CROSSOVER NETWORK WITH 4-FUNCTION INTERCHANGE NODES

A matrix analysis for free-space switching networks, such as perfect s huffle-exchange omega, crossover and Banyan is presented. On the basis of matrix analysis, the equivalence of these three switching networks and the route selection between input and output ports are simply exp lained. Furthermore, an optical crossover switching network, where MQW SEED arrays are used as electrically addressed four-function intercha nge nodes, is described and the optical crossover interconnection of 6 4 x 64, and high-speed four-function, interchange nodes is demonstrate d in the experiment.