Optical wavelength demultiplexer

Details Optical wavelength demultiplexer Optical wavelength demultiplexer

H - Electricity

04

B

325/1, 354/57

H04B 10/06 (2006.01) G02B 6/28 (2006.01) G02B 6/34 (2006.01) G06N 3/067 (2006.01) H04B 10/13 (2006.01) H04J 14/02 (2006.01)

Patent

CA 2015211

ABSTRACT OF THE DISCLOSURE An optical receiver including an optical conversion device which converts difference in wavelength into difference in spatial power distribution and pattern recognition element for recognizing patterns of the spatial power distribution and taking out output signals. At the output portion of the optical conversion device spatial power distributions are different for different wavelengths. After converting the spatial power distributions by the pattern recognition element into electric signals pattern recognition of the signals is performed to regenerate original signals with respective wavelengths. The optical conversion device uses a diffractive grating or a combination of an optical multimode circuit, an optical multimode fiber, and a plurality of optical waveguides. The pattern recognition element is constructed by a combination of a photo-detector array and a neural network or a combination of a hologram element, a photo-detector array and a neural network.

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