Patent ID: 9509413
Filing Date: 2016-11-29
CPC Classification: H03F,H04B

Claim Text:
1. An optical receiver, comprising: a first photodiode receiving a first optical signal and outputting a positive signal; a second photodiode receiving a second optical signal and outputting a complementary signal; a differential transimpedance amplifier receiving the positive signal and outputting an amplified positive signal voltage, and receiving the complementary signal and outputting an amplified complementary signal voltage; and a gain adjustment adjusting a first gain of a gain of the differential transimpedance amplifier for the positive signal and a second gain of a gain of the differential transimpedance amplifier for the complementary signal, wherein the differential transimpedance amplifier comprises a differential amplifier, the gain adjustment unit comprises a variable impedance unit connected to the differential amplifier, and the variable impedance unit is configured for its impedance to vary corresponding to an adjustable range of the first gain and the second gain.