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1. (WO2016060206) OPTICAL RECEIVER, ACTIVE OPTICAL CABLE, AND CONTROL METHOD FOR OPTICAL RECEIVER

Pub. No.:    WO/2016/060206    International Application No.:    PCT/JP2015/079191
Publication Date: Fri Apr 22 01:59:59 CEST 2016 International Filing Date: Fri Oct 16 01:59:59 CEST 2015
IPC: H03F 3/08
H03F 3/34
H04B 10/69
Applicants: FUJIKURA LTD.
株式会社フジクラ
Inventors: TANAKA, Takayuki
田中 貴之
HAYASHI, Minako
林 美奈子
Title: OPTICAL RECEIVER, ACTIVE OPTICAL CABLE, AND CONTROL METHOD FOR OPTICAL RECEIVER
Abstract:
An optical receiver provided with: a light receiving element (11) for converting an optical signal into a current signal; a transimpedance amplifier (12a) for converting the current signal into a voltage signal; a differential amplifier (12d) for converting the voltage signal into a differential signal by differentially amplifying a difference between the voltage signal and a threshold voltage; an LOS detection circuit (12k) for detecting a no-signal section of the optical signal; and an MCU (13) for repeating offset cancel processing including threshold voltage change processing for changing the threshold voltage such that the offset voltage of the differential signal decreases, wherein the MCU (13) skips the threshold voltage change processing in the no-signal section.