Wavelength stabilized planar waveguide optical devices...

Details Wavelength stabilized planar waveguide optical devices... Wavelength stabilized planar waveguide optical devices...

H - Electricity

04

J

H04J 14/02 (2006.01)

Patent

CA 2279765

A planar waveguide optical demultiplexer whose wavelengths are stabilized by temperature, has an input channel, a series of output data channels, and a dispersive element, such as a diffraction grating or phase array, for directing component wavelengths of incoming light into the respective output data channels. A pair of monitor channels have a separation less than, and a width greater than, the data channels. A differential feedback arrangement controls the temperature of the demultiplexer according a differential signal received from the pair of monitor channels.

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