公开(公告)号：US10797801B2

公开(公告)日：2020-10-06

申请号：US16157946

申请日：2018-10-11

Applicant: Finisar Corporation

Inventor： Gilles P. Denoyer ,  Dennis Pu ,  Homero Guimaraes ,  Faraz Monifi ,  Bryan Park ,  Daniel Mahgerefteh

IPC: H04B10/69 ,  H04B10/67

Abstract: An optical receiver with improved dynamic range may include at least one directional coupler having at least one input configured to couple to an optical fiber. The optical receiver may include a first signal path including a first photodetector coupled to an output of the at least one directional coupler, a first transimpedance amplifier (TIA) including an input coupled to the first photodetector, and an adder coupled to an output of the first TIA. The optical receiver may include a second signal path including a second photodetector coupled to an output of the at least one directional coupler, a second TIA including an input coupled to the second photodetector, and the adder coupled to an output of the second TIA. Further, the optical receiver may include an optical power sensing circuit coupled to at least one of the first TIA, the second TIA, and the adder.

公开(公告)号：US20190109649A1

公开(公告)日：2019-04-11

申请号：US16157946

申请日：2018-10-11

Applicant: Finisar Corporation

Inventor： Gilles P. Denoyer ,  Dennis Pu ,  Homero Guimaraes ,  Faraz Monifi ,  Bryan Park ,  Daniel Mahgerefteh

IPC: H04B10/67 ,  H04B10/69

CPC classification number: H04B10/671 ,  H04B10/69

Abstract: An optical receiver with improved dynamic range may include at least one directional coupler having at least one input configured to couple to an optical fiber. The optical receiver may include a first signal path including a first photodetector coupled to an output of the at least one directional coupler, a first transimpedance amplifier (TIA) including an input coupled to the first photodetector, and an adder coupled to an output of the first TIA. The optical receiver may include a second signal path including a second photodetector coupled to an output of the at least one directional coupler, a second TIA including an input coupled to the second photodetector, and the adder coupled to an output of the second TIA. Further, the optical receiver may include an optical power sensing circuit coupled to at least one of the first TIA, the second TIA, and the adder.