Fiber optic phase modulator using electro-optic material in evan

Details Fiber optic phase modulator using electro-optic material in evan Fiber optic phase modulator using electro-optic material in evan

1989-09-29

1991-04-16

Moskowitz, Nelson

Optics: measuring and testing

Range or remote distance finding

With photodetection

350 9629, 356350, G02B 600, G02F 129

Patent

active

050076957

ABSTRACT:
A cladded optical fiber is secured in a slot in a substrate which is ground and polished to access the evanescent field. A thin electro-optically active layer of PLZT is deposited on the top of the fiber substrate. A pair of parallel electrodes is then deposited on top of the crystal PLZT film. An electric field distribution parallel to the electro-optical film is generated at the center of the electrode gap by applying a voltage to the electrode pair so as to effect a phase shift of the light wave propagating in the fiber.

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patent: 4615582 (1986-10-01), Lefevre et al.
patent: 4715680 (1987-12-01), Kawaguchi et al.
patent: 4725113 (1988-02-01), Chang et al.
patent: 4752120 (1988-06-01), Shimizu
patent: 4850667 (1989-07-01), Djupsjobacka
patent: 4887900 (1989-12-01), Hall
patent: 4899042 (1990-02-01), Falk et al.

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