Network topology for reduced blocking and photonic system implem

Details Network topology for reduced blocking and photonic system implem Network topology for reduced blocking and photonic system implem

1989-05-08

1991-12-31

Kuntz, Curtis

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

385 16, H04J 1408

Patent

active

050774832

ABSTRACT:
A reduced-blocking system where a perfect shuffle equivalent network having a plurality of node stages successively interconnected by link stages, is advantageously combined with expansion before the node stages and/or concentration after the node stages in a manner allowing the design of a system with arbitrarily low or zero blocking probability. An illustrative photonic system implementation uses free-space optical apparatus to effect a low loss, crossover interconnection of two-dimensional arrays of switching nodes comprising, for example, symmetric self electro-optic effect devices (S-SEEDs). Several low loss beam conbination techniques are used to direct multiple arrays of beams to an S-SEED array, and to redirect a reflected output beam array to a subsequent node stage.

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