INTEGRATED LASER WITH BACK-REFLECTION ISOLATOR

摘要

An integrated circuit includes an optical source (such as a laser) with a lens, which is disposed on an isolator. This isolator is disposed on a semiconductor layer in a silicon-on-insulator (SOI) platform that includes an optical coupler and an optical waveguide. During operation, the optical source generates an optical signal that propagates toward the isolator so that the lens focuses the optical signal. Furthermore, the isolator reduces or eliminates back reflection of the optical signal toward the optical source, and the optical coupler couples the optical signal into the optical waveguide.

主权项

1. An integrated circuit, comprising:
a substrate; a buried-oxide (BOX) layer disposed on the substrate; a semiconductor layer disposed on the BOX layer, wherein the semiconductor layer includes an optical coupler and an optical waveguide, and wherein, during operation, the optical coupler couples an optical signal into the optical waveguide; an isolator disposed on the semiconductor layer; and an optical source, disposed on the isolator, which includes a lens, wherein, during operation, the optical source generates the optical signal that propagates toward the isolator, and the lens focuses the optical signal; and wherein, during operation, the isolator reduces back reflection of the optical signal toward the optical source.