1982-03-26
1984-07-24
Punter, William H.
350382, 350403, G02F 129
Patent
active
044615434
ABSTRACT:
An optical switch utilizes a birefringent device to cause orthogonally polarized components of an arbitrarily polarized incident light beam to propagate along separate paths. A polarization rotator is positioned in one path to rotate the polarization of the light beam propagating therealong to that of the light beam in the other path. The two paths are simultaneously deflected to selected parallel paths in accordance with the switching desired. A second polarization rotator reestablishes the initial polarization and the beams are recombined by a second birefringent device to emerge from the selected output terminal as an arbitrarily polarized light.
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patent: 3719414 (1973-03-01), Wentz
patent: 4359268 (1982-11-01), Kondo
Steinberg et al., "Design of Integrated Optical Switches for Use in Fiber Data Transmission Systems", IEEE Jr. of Quantum Electronics, 4-1977, pp. 122-128.
Masuda et al., "2.times.2 Optical Switch & Its Uses", Conf. Cleo 1981 Conf. on Lasers & Electro-Optics (papers in summary form only), pp. 178-179.
Levine Seymour
Punter William H.
Sperry Corporation
Terry Howard P.
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