Patent ID: 9698564
Date: 2017-07-04
CPC Classifications: G02B,H01S

Claim:
1. A multi-chip module (MCM), comprising: an interposer having a top surface; and a photonic chip, wherein the photonic chip includes: wherein traces, disposed on the semiconductor layer, face and are electrically coupled to the top surface of the interposer, an optical gain chip, wherein the optical gain chip includes a second substrate, wherein a second optical waveguide is defined in the second substrate, wherein a location of the second optical waveguide is vertically aligned with a location of the optical waveguide relative to the top surface of the interposer, and wherein the second substrate faces and is electrically coupled to the top surface of the interposer; and a waveguide-fiber connector, mechanically coupled to the top surface of the interposer, having a first end configured to remateably mechanically couple to an optical fiber coupler and a second end, wherein the waveguide-fiber connector includes a third optical waveguide that optically couples the first end and the second end, wherein, at the second end, a location of the third optical waveguide is vertically aligned with a location of the optical waveguide relative to the top surface of the interposer; wherein the optical fiber coupler is located at a first vertical position relative to the top surface of the interposer and the optical waveguide is located at a second, different vertical position relative to the top surface of the interposer, and wherein the third optical waveguide has a three-dimensional form that, during operation, conveys an optical signal between the first vertical position and the second vertical position.