Patent ID: 6049638
Filing Date: 2000-04-11
Classification: G02B,H01L,Y02E

Abstract:
A photodetector module comprising:a support substrate having a main surface;an optical waveguide mounted on said support substrate, said optical waveguide having an end face for emerging a light beam along a first optical path;a photodetector mounted on said support substrate so that said light beam emerged from said end face of said optical waveguide is incident on said photodetector, said photodetector having a photodetecting portion responding to said light beam incident on said photodetector;a first optical path converter converting said first optical path into a second optical path; anda second optical path converter converting said second optical path into a third optical path substantially perpendicular to said photodetecting portion, whereinsaid optical waveguide is formed on said support substrate so that said first optical path is parallel to said main surface of said support substrate, and said first and second optical path converters comprise first and second inclined surfaces formed on said photodetector obliquely to said main surface of said support substrate, respectively, andsaid first inclined surface is formed at an angle to said main surface of said support substrate so that said light beam emerged from said end face of said optical waveguide is refracted from said first optical path to said second optical path, and said second inclined surface is formed at an angle to said second optical path so that said light beam refracted by said first inclined surface is reflected from said second optical path to said third optical path.