Patent ID: 7924380
Filing Date: 2011-04-12
Classification: H01L

Abstract:
1. A semiconductor light-receiving device, comprising: a semiconductor substrate; and a first conductive type semiconductor layer, a second conductive type semiconductor layer including at least a light absorption layer, a first conductive type electrode formed on the first conductive type semiconductor layer, and a second conductive type electrode formed on the second conductive type semiconductor layer, which are formed on the semiconductor substrate, and signal light incident from the semiconductor substrate being absorbed by the light absorption layer and converted into an electric signal, wherein the semiconductor light-receiving device comprises a filter layer arranged between the semiconductor substrate and the light absorption layer, and formed of a semiconductor layer having a shorter absorption edge wavelength than that of the light absorption layer, the second conductive type electrode is formed on a first mesa where a semiconductor layer on the filter layer is formed in a mesa structure, and the semiconductor light-receiving device comprises a third mesa surrounding the first mesa, disposed spaced apart from the first mesa, and absorbing disturbance light to the signal light to be received by at least the light absorption layer.