US 12,323,229 B2
Device, apparatus, and method for adjusting optical signals, and storage medium
Zhi Chen, Wuhan (CN); Li Xiao, Wuhan (CN); Qinlian Bu, Wuhan (CN); Chunping Yu, Wuhan (CN); and Weiqing Zhang, Wuhan (CN)
Appl. No. 18/027,090
Filed by ACCELINK TECHNOLOGIES CO., LTD., Wuhan (CN)
PCT Filed Dec. 8, 2020, PCT No. PCT/CN2020/134441
§ 371(c)(1), (2) Date Mar. 17, 2023,
PCT Pub. No. WO2022/062187, PCT Pub. Date Mar. 31, 2022.
Claims priority of application No. 202011009105.5 (CN), filed on Sep. 23, 2020.
Prior Publication US 2023/0336267 A1, Oct. 19, 2023
Int. Cl. H04J 14/02 (2006.01)
CPC H04J 14/0221 (2013.01) 15 Claims
OG exemplary drawing
 
1. A device for adjusting optical signals, comprising a differential operation circuit, a feedforward amplification circuit and a control circuit, wherein input ends of the control circuit are respectively connected with an output end of the differential operation circuit and an output end of the feedforward amplification circuit;
wherein the differential operation circuit is configured to perform a differential operation on an input optical signal and an output optical signal to obtain a differential value;
the feedforward amplification circuit is configured to perform a feedforward amplification on the input optical signal to obtain a feedforward value; and
the control circuit is configured to receive the differential value and the feedforward value, adjust the output optical signal according to the differential value and the feedforward value to obtain an adjusted output optical signal,
wherein the device further comprises an optical signal input circuit which includes an optical signal input port and an input power detecting circuit;
wherein an input end of the input power detecting circuit is connected with the optical signal input port, and an output end of the input power detecting circuit is respectively connected with an input end of the feedforward amplification circuit and the output end of the differential operation circuit; and
the input power detecting circuit is configured to receive an original input optical signal using the optical signal input port, amplify the original input optical signal according to an input resistance value to obtain the input optical signal, and transmit the input optical signal to the feedforward amplification circuit and the differential operation circuit.