WAVELENGTH MULTIPLEXER/DEMULTIPLEXER

摘要

PROBLEM TO BE SOLVED: To uniformize insertion loss between channels in a wavelength multiplexer/demultiplexer. SOLUTION: The insertion loss between channels can be uniformized in the wavelength multiplexer/demultiplexer in which transmission spectrum is planarized by combining a Mach-Zehnder interferometer and an array waveguide diffraction grating. Concretely, the insertion loss of the respective channels of the wavelength multiplexer/demultiplexer can be uniformized by adjusting the position where the output side slab waveguide of the array waveguide diffraction grating is connected to each of a plurality of output waveguides. COPYRIGHT: (C)2009,JPO&INPIT