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Optical and Transient Debugging Method of Single-stage Multipump Structured Gain Variable Optical Amplifier

An optical amplifier and debugging method technology, applied in electromagnetic receivers, electrical components, electromagnetic wave transmission systems, etc., can solve problems such as overshoot and undershoot exceeding the standard, and noise index exceeding the standard, and achieve the effect of suppressing transient characteristics and improving performance

Active Publication Date: 2019-09-10
WUHAN TELECOMM DEVICES +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the power of the pump is not properly allocated, the noise figure may be good, but the transient overshoot and undershoot exceed the standard; it may also be that the transient is well suppressed, but at low input points of certain gains due to the pump power Improper distribution leading to excessive noise index

Method used

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  • Optical and Transient Debugging Method of Single-stage Multipump Structured Gain Variable Optical Amplifier
  • Optical and Transient Debugging Method of Single-stage Multipump Structured Gain Variable Optical Amplifier
  • Optical and Transient Debugging Method of Single-stage Multipump Structured Gain Variable Optical Amplifier

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Experimental program
Comparison scheme
Effect test

Embodiment

[0061] The principle of this embodiment is pure feedforward control for the first N-1 pumps, and feedback control for the Nth pump; the same model is selected for the first N-1 pumps, so that the rated power and threshold current are consistent, and the first N can be set synchronously. - K / B value of 1 pump; turn off the feedback control, set the K / B value of the first N-1 pumps in sequence, and set the K value of the Nth pump at the same gain high point to achieve the highest output signal power , set the B value of the Nth pump at the low point to achieve the low point output signal power; turn on the feedback control, adjust the ASE factor of the Nth fiber amplifier pump to lock the low point signal gain; according to the transient test results, adjust the feedback The PID value of the control and the K value and B value of the Nth pump are used to suppress the transient effect.

[0062] Let's take three pumps as an example to illustrate.

[0063] During implementation, a...

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Abstract

The invention relates to an optical amplifier debugging method, belongs to the technical field of optical communication, and in particular relates to an optical and transient debugging method for a gain variable light amplifier with a single-stage multi-pump structure. The power of a plurality of pump lasers is distributed to meet the noise index requirements under different gain conditions, and effectively suppress the transient characteristics. The performance of the optical amplifier is improved, and the stability and reliability of a whole optical communication system are guaranteed. A production automatic debugging program written according to the method shortens 50% of the debugging time. Multi-pump gain variable fiber amplifiers can be successfully produced in batches.

Description

technical field [0001] The invention relates to an optical amplifier debugging method, which belongs to the technical field of optical communication, and in particular relates to an optical and transient debugging method of a single-stage multi-pump structure gain variable optical amplifier. Background technique [0002] In the field of optical communication, the noise figure NF is defined as the ratio of the input signal-to-noise ratio to the output signal-to-noise ratio, the unit is dB [0003] [0004] NF is an index to measure the deterioration degree of OSNR after signal light passes through EDFA. [0005] In fiber amplifiers, the main source of noise is amplified spontaneous emission (ASE), and the formula for calculating noise is: [0006] [0007] where G is the gain of the EDFA, P ASE is the power of ASE, h is Planck's constant, v is the signal light frequency, and Δv is the noise equivalent bandwidth. [0008] In the DWDM system, with the increase of busin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/564H04B10/67H04B10/69
Inventor 叶知隽方迪余春平徐红春陶金涛
Owner WUHAN TELECOMM DEVICES