Optical switch

Details Optical switch Optical switch

1990-11-29

1992-07-21

Arnold, Bruce Y.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 71, 359247, 359251, 385 8, G02F 11335, G02B 628

Patent

active

051328224

ABSTRACT:
An optical switch for arbitrarily polarized light having low cross-talk is made in which an input beam is split into its TE (s wave) and TM (p wave) polarization components, the TM component is converted to TE by total internal reflection, the two beams are either reflected or transmitted by liquid crystal cells, one of the beams is then converted to TM polarization, again by total internal reflection, and the two beams are recombined and outputted from one of two ports.

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patent: 4948228 (1990-08-01), Keens
patent: 4948229 (1990-08-01), Soref
J. A. Apfel, "Graphical Method to Design Internal Reflection Phase Retarders," Applied Optics, vol. 23, No. 8, pp. 1178-1183 (Apr. 1984).

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