Patent ID: 6353250
Filing Date: 2002-03-05
Classification: G02B,H01L,Y02E

Abstract:
A semiconductor photo-detector characterized in that:a first semiconductor layer having a first conduction type, a second semiconductor layer having a second conduction type, and a photo-absorption part comprising a photo-absorption layer sandwiched between said first semiconductor layer and said second semiconductor layer are disposed on a substrate; at least said photo-absorption layer is formed at a position apart inwardly by a finite length from an end surface of said substrate; an end surface of said second semiconductor layer and said substrate or said end surface of said substrate is provided with a light incident facet angled inwardly as it separates from the surface of said second semiconductor or the surface of said substrate; wherein light incident to said light incident facet is refracted at said light incident facet and transits said photo-absorption layer diagonally with respect to the layer thickness direction.