Optical crossbar switching network

Details Optical crossbar switching network Optical crossbar switching network

1975-11-20

1977-03-22

Corbin, John K.

350 96WG, G02B 514

Patent

active

040130002

ABSTRACT:
An optical switching network employing a plurality of optical switching crosspoints is implemented by providing the first and second pluralities of strip waveguide channels passing one over the other in parallel planes separated by an intervening medium. The implementation is further characterized by including at each of the proposed switching crosspoints, that is, at the regions of closest approach of the different strip guides, beam-guide couplers such as grating-type couplers to couple the modulated optical energy from one of the first plurality of channels to one of the second plurality of channels through an intervening, supporting medium. There are provided two couplers at each optical crosspoint; and they are controllable between coupling and noncoupling conditions with respect to their respective waveguide channels.

REFERENCES:
patent: 3622792 (1971-11-01), Piccininni
patent: 3871742 (1975-03-01), Kaminow et al.
patent: 3871743 (1975-03-01), Fulenwider
patent: 3904270 (1975-09-01), Cheo
Taylor "Optical-Waveguide Connecting Networks" Electronics Letters vol. 10, No. 4, pp. 41-43 Feb. 74.

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