Optical switch and matrix optical switch

Details Optical switch and matrix optical switch Optical switch and matrix optical switch

2007-11-27

2007-11-27

Font, Frank G. (Department: 2883)

Optical waveguides

With optical coupler

Particular coupling structure

C385S004000, C385S008000, C385S009000, C385S039000, C385S040000, C385S041000, C385S042000, C385S043000, C385S045000, C385S050000

Reexamination Certificate

active

11398151

ABSTRACT:
The invention provides an optical switch including a substrate which has conductivity or semiconductivity, an optical waveguide layer which is formed on the substrate, and a control electrode which is formed on the optical waveguide layer. The optical waveguide layer includes an incident-side channel waveguide to which a light signal is incident and plural outgoing-side channel waveguides branched from the incident-side channel waveguide. The control electrode forms a reflection plane reflecting the incident light signal near a crossover portion of the plural outgoing-side channel waveguides by applying voltage to the optical waveguide layer with the substrate to control a refractive index of the optical waveguide layer, and switches propagation paths of the light signal.

REFERENCES:
patent: 5439782 (1995-08-01), Haemmerle et al.
patent: 6470125 (2002-10-01), Nashimoto et al.
patent: 6-5350 (1994-01-01), None
patent: 7-318986 (1995-12-01), None
patent: 2000-47272 (2000-02-01), None
patent: 2006-58837 (2006-03-01), None
Chen S. Tsai, et al., Optical Channel Waveguide Switch and Coupler Using Total Internal Reflection, IEEE Journal of Quantum Electronics, vol. QE-14, No. 7 Jul. 1978, pp. 513-517.
Kiyotaka Weasa, et al., Optical TIR Switches Using PLZT Thin-Film Waveguide on Sapphire, Journal of Lightwave Technology, vol. LT-2, No. 5 Oct. 1984, pp. 710-714.
Stan West, Dynamic and Reconfigurable Components; Wednesday morning/OFC 2002/187.

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