Patent ID: 7929817
Filing Date: 2011-04-19
Classification: G02B

Abstract:
1. An optical multiplexer/demultiplexer comprising: a light guide main line which guides lights of a plurality of wavelengths; and a plurality of microring optical resonators directly optically coupled to the light guide main line, wherein the plurality of microring optical resonators are arranged in two of layers higher than, level with, and lower than a plane where the light guide main line is disposed, and the plurality of microring optical resonators are partially overlapped in a plan view, wherein the microring optical resonators are arranged so that a distance “c” between the centers of adjacent microring optical resonators satisfies c<½(a+b) in the same horizontal projection plane parallel to a plane where the microring optical resonators are arranged, where “a”, “b” are the outside diameters of ring guides of the adjacent microring optical resonators.