公开(公告)号：US20240121009A1

公开(公告)日：2024-04-11

申请号：US18170326

申请日：2023-02-16

Applicant: Cisco Technology, Inc.

Inventor： Simon S. PANG ,  Wei LI

IPC: H04B10/69 ,  H04B10/61

CPC classification number: H04B10/6971 ,  H04B10/612

Abstract: A waveguide delay-based equalization (WDEQ) system is described. The WDEQ system provides a delay in waveguides of the system and electrical signal summing in a differential transimpedance amplifier (TIA) which increases the performance (e.g., bandwidth, etc.) of the optical receiver. The WDEQ system includes an optoelectronic circuit with a directional coupler, a first photodetector, at least two transistors connected to the first photodetector, an optical delay, and a differential transimpedance amplifier (TIA).