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1. (WO2017152811) OPTICAL NOISE REMOVAL CIRCUIT, OPTICAL RECEIVER, AND OPTICAL CHIP

Pub. No.:    WO/2017/152811    International Application No.:    PCT/CN2017/075622
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Sat Mar 04 00:59:59 CET 2017
IPC: H04B 10/116
Applicants: KUANG-CHI INTELLIGENT PHOTONIC TECHNOLOGY LTD.
深圳光启智能光子技术有限公司
Inventors: LIU, Ruopeng
刘若鹏
XU, Weicheng
许伟成
FAN, Linyong
范林勇
XIAO, Guangjin
肖光锦
Title: OPTICAL NOISE REMOVAL CIRCUIT, OPTICAL RECEIVER, AND OPTICAL CHIP
Abstract:
The present invention relates to an optical noise removal circuit, an optical receiver, and an optical chip. The optical noise removal circuit comprises a noise filtering unit and a comparison unit. An input end of the noise filtering unit receives electrical signals of an optical-to-electrical conversion unit. The noise filtering unit is used for filtering out a noise electrical signal among the electrical signals that is generated due to ambient light, and outputting a target pulse signal at an output end. A first input end of the comparison unit is coupled to an output end of the noise filtering unit to receive the target pulse signal. The comparison unit is used for outputting a digital signal according to comparison between the target pulse signal and a reference voltage. By implementing the present invention, the quality of optical signal reception can be effectively improved.