N. Matsui, D. Maeda, H. Uemura, R. Motoji, T. Sugita
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Comparing Strip-type and Rib-type Demultiplexers from a Fabrication Tolerance Point of View
We investigated the fabrication tolerance of demultiplexers for coarse wavelength division multiplexing. Regarding the transverse electric mode input, the cascaded Mach-Zehnder interferometers using rib-type waveguide as a demultiplexer was found to be more robust than that using strip-type waveguide.