Patent ID: 9117946
Filing Date: 2015-08-25
Classification: G02B,H01L,Y02E

Abstract:
1. A method of forming an integrated photonic semiconductor structure having a photodetector device and a CMOS device comprising: forming a well region for the CMOS device; forming an isolation region for electrically isolating the photodetector device from the well region; forming a semiconductor optical waveguide for propagating optical signals; depositing, within the isolation region, germanium material adjacent to a first portion of opposing side walls of the semiconductor optical waveguide, the first portion of the opposing sidewalls being substantially parallel with a travel direction of the propagating optical signals within the optical waveguide; and depositing an oxide liner within the isolation region prior to the depositing of the germanium material, wherein the oxide liner separates the first portion of the opposing side walls of the semiconductor optical waveguide from the adjacent deposited germanium material, wherein the deposited germanium material forms an active region of the photodetector device for evanescently receiving the propagating optical signals from the first portion of the opposing sidewalls of the semiconductor optical waveguide structure.