公开(公告)号：US20190113687A1

公开(公告)日：2019-04-18

申请号：US16159174

申请日：2018-10-12

Applicant: Luxtera, Inc.

Inventor： Shawn Wang ,  Subal Sahni ,  Gianlorenzo Masini

IPC: G02B6/293 ,  G02B6/32

Abstract: Near normal incidence MUX/DEMUX designs may include an optical demultiplexer coupled to a photonics die, where the optical demultiplexer comprises an input fiber, thin film filters at a first surface of a substrate, a first mirror at the first surface of the substrate, and a second mirror at a second surface of the substrate. The optical demultiplexer may receive an input optical signal comprising a plurality of wavelength optical signals, reflect the input optical signal from the first mirror to the second mirror, reflect the input optical signal from the second mirror to a first of the thin film filters, communicate an optical signal at a first wavelength to the photonics die while reflecting others to the second mirror, reflect the other signals to a second of the plurality of thin film filters, and communicate an optical signal at a second wavelength to the photonics die.