Waveguide type liquid-crystal optical switch

Details Waveguide type liquid-crystal optical switch Waveguide type liquid-crystal optical switch

2005-06-07

2005-06-07

Ullah, Akm Enayet (Department: 2874)

Optical waveguides

With optical coupler

Particular coupling structure

C385S016000, C385S021000, C385S040000, C385S050000, C385S131000

Reexamination Certificate

active

06904207

ABSTRACT:
A waveguide type liquid-crystal optical switch including: an optical waveguide having a pair of first and second cores close to each other for switching an optical path between the pair of first and second cores; a third core made of nematic liquid crystal enclosed in between a pair of oriented films and oriented in a predetermined direction by the pair of oriented films, the third core being disposed in any one of a space covering the first and second cores in parallel with a plane containing optical axes of the first and second cores, a space sandwiched between the first and second cores and a space covering upper surfaces of the first and second cores so as to be laid over the first and second cores; a first electrode disposed on a surface of the third core opposite to the first and second cores so as to cover a gap portion between the first and second cores; second and third electrodes disposed as a pair, between which electrodes the first electrode is put, the second and third electrodes provided for orienting liquid crystal molecules in a direction perpendicular to the direction of orientation of the oriented films; and a clad for collectively surrounding the first, second and third cores and the first, second and third electrodes.

REFERENCES:
patent: 4720174 (1988-01-01), Baker
patent: 5044712 (1991-09-01), Soref
patent: 5589961 (1996-12-01), Shigeta et al.
patent: 6763159 (2004-07-01), Kawamoto
patent: 0 317 531 (1989-05-01), None
patent: 05165068 (1993-06-01), None
patent: 1 054 288 (2000-11-01), None
patent: 1054288 (2000-11-01), None
patent: 5-165068 (1993-06-01), None
patent: 05165068 (1993-06-01), None
European Search Report dated Sep. 11, 2003.

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