Wavelength demultiplexer using waveguide technology with built-in grating structure for multichannel optical wavelength monitor

摘要

A wavelength demultiplexer structure using a channel waveguide grating embedded in a planar waveguide is demonstrated. A segmented waveguide structure is used as a built-in grating fabricated simultaneously with the channel waveguide to simplify the fabrication process. The wavelength peak heights are almost constant and a spatial dispersion value of 6/spl times/10/sup 5/ was obtained.