Patent ID: 9547125
Date: 2017-01-17
CPC Classifications: G02B,H01L,Y02E

Claim:
1. An integrated photonic semiconductor structure comprising: a substrate; an isolation region; a CMOS device located on the substrate; a semiconductor optical waveguide structure located on the substrate and electrically isolated from the CMOS device by the isolation region, the semiconductor optical waveguide structure having a first side wall and a second side wall that opposes the first side wall; a photodetector located within the isolation region, the photodetector having a first and a second germanium active region, the first germanium active region located adjacent to the first side wall of the waveguide structure and the second germanium active region located adjacent to the second side wall of the waveguide structure, wherein the first and the second germanium active region evanescently receive propagating optical signals from the first and the second side wall of the semiconductor optical waveguide, and the first germanium active region is separated from the first side wall of the semiconductor optical waveguide by a first oxide liner, and the second germanium active region is separated from the second side wall of the semiconductor optical waveguide by a second oxide liner.