Unlock instant, AI-driven research and patent intelligence for your innovation.

FM-EDFA automatic gain control device

An FM-EDFA, automatic gain control technology, applied in the field of optical communication, can solve the problems of large differential mode gain and unbalanced mode gain, and achieve the effect of fast and accurate calculation and cost reduction

Active Publication Date: 2021-06-11
UNIV OF ELECTRONICS SCI & TECH OF CHINA
View PDF14 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies in the prior art, provide a kind of FM-EDFA automatic gain control device, by the modal comprehensive detection to FM-EDFA few-mode amplified signal, and adjust the FM-EDFA pump light according to the detection result Mode and power, to automatically control the mode gain of FM-EDFA, so as to solve the problem of unbalanced mode gain or large differential mode gain of the amplified signal in FM-EDFA

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • FM-EDFA automatic gain control device
  • FM-EDFA automatic gain control device
  • FM-EDFA automatic gain control device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0026] figure 1 It is a schematic diagram of an FM-EDFA automatic gain control device of the present invention.

[0027] In this example, if figure 1 As shown, a kind of FM-EDFA automatic gain control device of the present invention comprises: pump adjustable FM-EDFA, modal comprehensive detection module and modal feedback control circuit;

[0028] Such as figure 2 As shown, the pump tunable FM-EDFA includes a multiplexer, a few-mode erbium-doped fiber FM-EDF, an adjustable pump unit and a pump stripper; wherein the adjustable pump unit includes a pump light source, a modal modulator and drive circuit;

[0029] In this embodiment, the adjustable pump unit can be specifically realized by "adjustable pump laser array + mode selection photonic lantern" or "single pump laser + spatial light modulator";

[0030] Under the control of the pump control signal, the drive circuit adjusts the output power of the pump light source and the mode of the modal modulator to generate multi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an FM-EDFA automatic gain control device, which is characterized in that a few-mode input signal and multi-mode pump light in a pump adjustable FM-EDFA are injected into an FM-EDF together for mode amplification, and the amplified few-mode signal is sent to a mode comprehensive detection module to complete mode comprehensive measurement of the few-mode amplification signal; and the modal feedback control circuit generates a pumping control signal according to the modal comprehensive measurement result and controls the adjustable pumping unit to adjust the pumping mode component and the power of the pumping mode component, so that the automatic gain control function of the whole FM-EDFA is realized.

Description

technical field [0001] The invention belongs to the technical field of optical communication, and more specifically relates to an FM-EDFA automatic gain control device. Background technique [0002] With the explosive growth of network traffic, the transmission capacity of single-mode optical fiber communication systems is gradually approaching the nonlinear Shannon limit. In order to meet the ever-increasing capacity requirements of optical networks, space division multiplexing technology has attracted more and more attention. Space-division multiplexed long-distance transmission systems are inseparable from space-division multiplexed optical amplifiers. Among them, few-mode or multi-core erbium-doped fiber amplifiers have the most extensive application scenarios, especially few-mode erbium-doped fiber amplifiers (FM-EDFA). It can be used to compensate mode attenuation in mode transmission and switching systems, and can also be used in few-mode nonlinear systems to increas...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/294H01S3/067
CPCH04B10/2942H01S3/06754
Inventor 武保剑江歆睿文峰邱昆
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA