Patent
1989-09-29
1990-06-12
Sikes, William L.
350 9620, G02B 610, G02B 636
Patent
active
049327356
ABSTRACT:
A hybrid design for rectangularly configured integrated optical matrix switches uses both 2.times.2 optical changeover switches and 2.times.2 optical shift switches to achieve significant reduction of crosstalk accumulation for a strictly nonblocking switch architecture. The 2.times.2 optical shift switches are novel two-stage switches which allow two connection paths to bypass each other with very little crosstalk in the crossover state. A crossbar matrix switch uses 2n 2.times.2 optical changeover switches in the outer stages and n.sup.2 -2n optical shift switches in the intermediate stages.
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Cannon, Jr. James J.
GTE Laboratories Incorporated
Lohmann, III Victor F.
Sikes William L.
Ullah Akm E.
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