Device, apparatus, and method for adjusting optical signals, and storage medium

Patent metadata

Field	Value
Publication number	US-12323229-B2
Application number	US-202018027090-A
Country	US
Kind code	B2
Filing date	Dec 8, 2020
Priority date	Sep 23, 2020
Publication date	Jun 3, 2025
Grant date	Jun 3, 2025

Abstract

An optical signal adjusting apparatus, device and method, and storage medium. The optical signal adjusting apparatus ( 1 ) includes a differential operation circuit ( 11 ), a feedforward amplification circuit ( 12 ) and a control circuit ( 13 ), wherein input ends of control circuit ( 13 ) are respectively connected to an output end of the differential operation circuit ( 11 ) and an output end of the feedforward amplification circuit ( 12 ); the differential operation circuit ( 11 ) 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 ( 12 ) is configured to perform feedforward amplification on the input optical signal, to obtain a feedforward value; and the control circuit ( 13 ) is configured to receive the differential value and the feedforward value, and adjusts the output optical signal according to the differential value and the feedforward value, to obtain an adjusted output optical signal.

First claim

What is claimed is:

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.

2. The device according to claim 1 , wherein the feedforward amplification circuit is configured to amplify the input optical signal using a configured feedforward parameter to obtain the feedforward value.

3. The device according to claim 1 , wherein the device further comprises a noise compensation circuit and an adder;
an output end of the noise compensation circuit and an output end of the input power detecting circuit are respectively connected with an input end of the adder;
an output end of the adder is connected with the input end of the differential operation circuit;
the noise compensation circuit is configured to generate a noise signal corresponding to a configured noise parameter;
the adder is configured to receive the noise signal, and fuse the noise signal with the input optical signal to obtain a fused input optical signal.

4. The device according to claim 3 , wherein the differential operation circuit is configured to receive the fused input optical signal, and perform a differential operation on the fused input optical signal and the output optical signal to obtain the differential value.

5. The device according to claim 4 , wherein the device further comprises an optical signal output circuit which includes an output power detecting circuit and an optical signal output port;
an input end of the output power detecting circuit is connected with the optical signal output port, and an output end of the output power detecting circuit is connected with an input end of the differential operation circuit;
the output power detecting circuit is configured to obtain the output optical signal through the optical signal output port, and transmit the output optical signal to the differential operation circuit.

6. The device according to claim 1 , wherein the device further comprises an optical signal output circuit which includes an output power detecting circuit and an optical signal output port;
an input end of the output power detecting circuit is connected with the optical signal output port, and an output end of the output power detecting circuit is connected with an input end of the differential operation circuit;
the output power detecting circuit is configured to obtain the output optical signal through the optical signal output port, and transmit the output optical signal to the differential operation circuit.

7. The device according to claim 6 , wherein the control circuit comprises a controller;
input ends of the controller are respectively connected with the output end of the differential operation circuit and the output end of the feedforward amplification circuit;
the controller is configured to adjust the differential value to obtain an adjusted differential value, and determine a sum of the adjusted differential value and the feedforward value to obtain an adjusted value of the output optical signal.

8. The device according to claim 7 , wherein the control circuit further comprises a pump circuit and a drive circuit;
an output end of the controller is connected with an input end of the drive circuit; an output end of the drive circuit is connected with an input end of the pump circuit; an output end of the pump circuit is connected with an output end of the optical signal output circuit;
wherein the driving circuit is configured to convert the adjusted value of the output optical signal into a voltage signal; and
the pump circuit is configured to receive the voltage signal, output an optical signal matched with the voltage signal, and fuse the optical signal and the output optical signal to obtain the adjusted output optical signal.

9. An apparatus for adjusting optical signals, comprising a light source device, a spectral analysis device, a control device, and a device for adjusting optical signals;
the control device being respectively connected with the light source device and the spectral analysis device; an output end of the light source device being connected with an input end of the device for adjusting optical signals; an output end of the device for adjusting optical signals being connected with an input end of the spectral analysis device;
wherein the device for adjusting optical signals comprises 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;
wherein the light source device is configured to receive original parameters sent by the control device and an input power parameter correspon

Assignees

• Accelink Tech Co Ltd

Inventors

• Chen Zhi
• Xiao Li
• Bu Qinlian
• Yu Chunping
• Zhang Weiqing

Classifications

• H04J14/02216

  by gain equalization · CPC title

• H04J14/02219

  Distributed control · CPC title

• H04B10/693

  Arrangements for optimizing the preamplifier in the receiver · CPC title

• H04J14/0221 Primary

  Power control, e.g. to keep the total optical power constant · CPC title

• H04B10/293 Primary

  Signal power control · CPC title