公开(公告)号：US20240405883A1

公开(公告)日：2024-12-05

申请号：US18325933

申请日：2023-05-30

Applicant: Cisco Technology, Inc.

Inventor： Long CHEN ,  Qianfan XU ,  Jon ROTH

IPC: H04B10/61 ,  H04B10/294 ,  H04B10/50

Abstract: A receiver comprises at least two input ports. An optical signal containing n wavelengths is coupleable to one of these input ports. The receiver comprises a first demultiplexer coupled to a first input port to separate n wavelengths in the first input port onto n first multiplexer output ports, a second demultiplexer coupled to a second input port to separate the n wavelengths in the second input port onto n second multiplexer output ports, and a waveguide crossing matrix comprising an input side and an output side. The crossing matrix coupled to the n first and the n second multiplexer output ports on the input side and coupled to n shared photodetectors on the output side, one for each wavelength channel. Each of the photodetectors is coupled to one of the n first multiplexer output ports and one of the n second multiplexer output ports for the one wavelength channel.