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Automatic control method and device for multiple pump Raman amplifier gain

A technology of amplifier gain and amplifier, applied in instruments, electromagnetic wave transmission systems, optics, etc., can solve problems such as cumbersome adjustment process and changing gain flatness

Inactive Publication Date: 2004-09-29
ZTE CORP
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0011] The technical problem to be solved by the present invention is to propose a method for automatically controlling the gain spectrum of a multi-pump distributed Raman amplifier, which overcomes the difficulty of online configuration and gain adjustment of the multi-pump Raman amplifier, and the manual online adjustment is easy to change the gain flatness, The problem of cumbersome adjustment process

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  • Automatic control method and device for multiple pump Raman amplifier gain
  • Automatic control method and device for multiple pump Raman amplifier gain
  • Automatic control method and device for multiple pump Raman amplifier gain

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Embodiment Construction

[0050] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings. The corresponding relationship between each mark in the figure and the object it represents is:

[0051] P0: pump power;

[0052] g0: Gain spectrum formed under the action of pump power P0;

[0053] P1: the power of the first pump wavelength;

[0054] P2: the power of the second pump wavelength;

[0055] g1: the gain spectrum formed under the action of the first pump wavelength power P1;

[0056] g2: Gain spectrum formed under the action of the second pump wavelength power P2;

[0057] gt: the gain spectrum under the joint action of two pump wavelength powers, with the best flatness;

[0058] P1': the power of the first pump wavelength, changed compared to P1;

[0059] P2': the power of the second pump wavelength, changed compared to P2;

[0060] g1': the gain spectrum formed under the action of the first pump wavel...

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Abstract

This invention relates to a close-packed WDM and puts forward a gain spectrum automatic control method and its device for a multipump distributed Raman amplifier relating to close-packed WDM among which the method includes: setting a pump power initial value, applying signal power spectrum scanning, applying signal equivalent power progressive control and signal gain spectrum slope progressive control till meeting the power control requirement. The device includes an amplifier with multiple pump lasers, a light coupler a light detector, a control system and an outer communication interface. This invention can automatically realize gain spectrum constraint.

Description

technical field [0001] The present invention relates to the field of Dense Wavelength Division Multiplexing (DWDM) optical communication in the field of optical communication, in particular to a method for automatically controlling the gain spectrum of a multi-pump Raman (Raman) amplifier and a device for implementing the method. Background technique [0002] In dense wavelength division multiplexing systems, in order to extend the transmission distance, optical amplifier devices are used, one of which is a Raman amplifier, which feeds high-power pump light into the optical fiber and utilizes the stimulated Raman in the optical fiber. Scattering (SRS) effect, so that the energy of the pump light is transferred to the signal light longer than its wavelength, so as to realize the amplification of the signal light. [0003] In a specific type of fiber, the relationship between pump energy and gain is as follows figure 1 As shown, the pump light power of a specific wavelength i...

Claims

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Application Information

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IPC IPC(8): G02F1/39H04B10/293H04J14/02
Inventor 王加莹
Owner ZTE CORP
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