| 摘要 |
PROBLEM TO BE SOLVED: To achieve a semiconductor light receiving element for maintaining photoelectric conversion efficiency and at the same time reducing the maximum light intensity of a light reception element section. SOLUTION: The semiconductor light receiving element where photoelectric conversion takes place by the generation of light-excited carriers due to the interband transition of electrons caused by the light excitation of incident light comprises an optical waveguide section for propagating incident light, a main detection section for generating light excited carriers by absorbing light from the optical waveguide section, and a weak light-coupling section that is provided between the optical waveguide section and the main detection section to generate light-excited carriers due to light absorption and at the same time attenuate the intensity of propagated light. COPYRIGHT: (C)2003,JPO
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