Optical switch device

Details Optical switch device Optical switch device

2006-01-31

2006-01-31

Font, Frank G. (Department: 2883)

Optical waveguides

With optical coupler

Switch

C385S015000, C385S031000, C385S037000, C385S039000, C385S046000, C385S047000

Reexamination Certificate

active

06993217

ABSTRACT:
In an optical switch device: output waveguides are arranged with such a pitch as to realize a split wavelength gap equal to or smaller than half of a gap between operating wavelengths of optical signals; at least two input waveguides are arranged with the same pitch; at least one slab waveguide spreads light from the input waveguides to be outputted to a grating element, condenses first light from the grating element to be outputted into the input waveguides, condenses second light from the grating element for each wavelength to be outputted into the output waveguides, and spreads light from the output waveguides to be outputted to the grating element; and the optical switch unit selects signals at an identical wavelength in adjacent output waveguides, and performs 2×2 switching of the signals so as to output the signals from the input waveguides.

REFERENCES:
patent: 6049640 (2000-04-01), Doerr
patent: 6278813 (2001-08-01), Takada et al.
patent: 0 901 024 (1999-03-01), None
patent: 05-333384 (1993-12-01), None
patent: 2002-311343 (2002-10-01), None
Patent Abstracts of Japan, Publication No. 11-133469, Published May 21, 1999.
Patent Abstracts of Japan, Publication No. 2002-072157, Published Mar. 12, 2002.
“Multi-Wavelenght 2×2 Fiber-Optic Switch Structure Using Mirror Array”, Nabeel A. Riza et al., Photonic Information Processing Systems (PIPS) Laboratory, 1999 IEEE, pp. 129-130.

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