Optical waveguides – With optical coupler – Plural
Patent
1997-07-07
1999-10-05
Lee, John D.
Optical waveguides
With optical coupler
Plural
385 37, 359124, 359127, 359130, H04J 1402
Patent
active
059636858
ABSTRACT:
A cross-connection device has two three-port optical circulators for being supplied with wavelength-division-multiplexed optical signals each having a plurality of wavelengths from respective input ports, a fiber grating mirror inserted between the three-port optical circulators, for reflecting only an optical signal having a certain wavelength and passing optical signals having other wavelengths, a fiber grating mirror controller for controlling the wavelength reflected by the fiber grating mirror, and two output ports for outputting cross-connected wavelength-division-multiplexed optical signals from the optical circulators. The fiber grating mirror controller controls the temperature and pressure applied to the fiber grating mirror to select the wavelength reflected by the fiber grating mirror. The fiber grating mirror may comprise a plurality of fiber grating mirrors for reflecting different wavelengths to cross-connect a desired number of optical signals of the supplied wavelength-division-multiplexed optical signals.
REFERENCES:
patent: 4821255 (1989-04-01), Kobrinski
patent: 5726785 (1998-03-01), Chawki et al.
patent: 5742416 (1998-04-01), Mizrahi
patent: 5748349 (1998-05-01), Mizrahi
Hao Victoria D.
Lee John D.
NEC Corporation
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