Extendible Ruman amplifier and control method thereof

A Raman amplifier, main amplifier technology, applied in instruments, electromagnetic wave transmission systems, optics, etc., can solve problems such as optical channel amplification, achieve the effect of flexible working bandwidth and saving initial investment costs

Inactive Publication Date: 2009-01-21
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the difficulty of using Raman amplifiers to realize progressive bandwidth upgrade

Method used

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  • Extendible Ruman amplifier and control method thereof
  • Extendible Ruman amplifier and control method thereof
  • Extendible Ruman amplifier and control method thereof

Examples

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Example Embodiment

[0038] Refer to Figure 1, which shows the implementation of the main amplifier and the auxiliary amplifier connected through an optical interface and a bus interface.

[0039]As shown in Fig. 1, 11 is the main amplifier that realizes Raman amplification. In the main amplifier 11, the dashed box indicates a general pump laser combination. Taking two pump wavelengths, each composed of two lasers as an example, L11 and L12 in the main amplifier 11 are two lasers with different polarization directions and the same working wavelength; 12 is a polarization multiplexer; L21 and L22 are Two lasers with different polarization directions and the same working wavelength; 13 is a polarization multiplexer; 14 is a multiplexing filter. The output lights of the laser L11 and the laser L12 pass through the polarization multiplexer 12 and are combined into one channel of light with a specific wavelength of orthogonal polarization. The output light of the laser L21 and the laser L22 passes through ...

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Abstract

This invention relates to an expanded Raman amplifier including a master amplifier and a subamplifier. They are composed of a pump laser providing pump light source, a wave synthesizer and a laser control circuit connecting with the equipment communication bus via an interface, the pump source of the sub amplifier is input to the master via the fiber interface after synthesis and input to transmission fiber together with the master pump light via the synthesized filter and interface of the master amplifier. They can be connected or separated physically due to the light interface like a flexible jumper and a luggable electric interface and flexiblly mounted or dismantled.

Description

technical field [0001] The present invention relates to a device for realizing optical signal amplification, in particular to dense wavelength division multiplexing optical communication equipment in the communication field, using grouped Raman amplifiers to realize the expansion of the transmission bandwidth of the wavelength division multiplexing optical communication system to facilitate equipment upgrades Capacity expansion and its corresponding control methods. Background technique [0002] In dense wavelength division multiplexing systems, optical amplifiers are used in order to extend the transmission distance. One way to achieve amplification is Raman amplification, which is to feed high-power pump light into the transmission fiber. Due to the stimulated Raman scattering effect (SRS effect) in the fiber, the pump light energy will be transferred to In the signal light, the amplification of the signal light is realized. Raman amplification has a wide range of action...

Claims

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Application Information

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IPC IPC(8): G02F1/39H04B10/17H01S3/30
Inventor 王加莹李青宁
Owner ZTE CORP
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