Optical switch

Details Optical switch Optical switch

2008-04-22

2008-04-22

Evans, F. L. (Department: 2877)

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

C356S328000, C359S290000, C385S015000

Reexamination Certificate

active

07362434

ABSTRACT:
A highly reliable optical switch which can output (switch) accurately to an optical fiber for output without being affected by a change in an environment and a change due to an elapsed time is provided. The optical switch includes a first spectroscope which separates spatially light from an optical fiber for input according to a wavelength and a mirror array which includes a plurality of mirrors which reflect separated light and an angle of each of the mirrors can be controlled independently by an electric signal. The optical switch further includes An optical branching device which extracts a part of an output light from the optical fiber for output, an optical fiber for monitoring which guides apart of output light extracted by the optical branching device, a second spectroscope which separates spatially light from the optical fiber for monitoring according to a wavelength, and a photodetector array which can detect lights of different wavelengths separated at the second spectroscope.

REFERENCES:
patent: 6657770 (2003-12-01), Marom et al.
patent: 6738540 (2004-05-01), Marom
patent: 2002/0071627 (2002-06-01), Smith et al.
patent: 2003/0002791 (2003-01-01), Cao
patent: 2003-101479 (2003-04-01), None

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