1987-07-08
1988-05-24
Davie, James W.
350 9615, 350 9620, G02B 616
Patent
active
047461918
ABSTRACT:
There is disclosed an optical switch comprising an optical fiber, a block of PLZT, and two polarizers disposed on opposite sides of the block. The fiber has one or more grooves in which the block and the polarizers are received. The block of PLZT induces an electric field perpendicular to the axis of the core of the fiber. The groove or grooves extend across the core of the fiber such that the block covers the whole cross section of the core. Each polarizer consists of alternate laminations of a metal and a dielectric. The laminations are stacked in a direction perpendicular to the axis of the core. Each dielectric lamination is thicker than each metal lamination. If incident light is polarized, one of the polarizers is omitted.
REFERENCES:
patent: 3756690 (1973-09-01), Borrelli et al.
patent: 3770339 (1973-11-01), Ramaswamy
patent: 4630889 (1986-12-01), Hicks, Jr.
Kawakami Shojiro
Minakata Makoto
Takata Mitsuhiro
Toyota Sachio
Davie James W.
Sumitomo Special Metal Co. Ltd.
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