Patent ID: 9594215
Date: 2017-03-14
CPC Classifications: G02B,H01S

Claim:
1. A semiconductor light-receiving element, comprising: a light-receiving part provided on a substrate and having a semiconductor multilayer structure whose outer shape is round; an optical input part formed of a circumferential extension of a peripheral portion of the semiconductor multilayer structure, and having a tapered front end in a direction parallel to the substrate; and a silicon-thin-line waveguide configured to couple light with the optical input part, the silicon-thin-line waveguide including a linear part extending through an upper-side area or a lower-side area of the optical input part onto at least one area of an upper-side area and a lower-side area of the light-receiving part, and a spiral part connected to the linear part and formed spirally on the at least one area, wherein the linear part of the silicon-thin-line waveguide does not overlap a front end face of the optical input part but does overlap a part of a side surface of the optical input part in a direction perpendicular to the substrate.