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Channel power equalizing method for optical fiber Raman amplifier for wave division multiplexing communication system

A technology of Raman amplifier and communication system, applied in the direction of wavelength division multiplexing system, electromagnetic wave transmission system, transmission system, etc., to achieve the effect of equipment cost reduction and structure simplification

Inactive Publication Date: 2006-11-01
TSINGHUA UNIV
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Problems solved by technology

[0020] The purpose of the present invention is to propose a kind of new method that solves the WDM system channel power dynamic equalization problem that contains FRA for the deficiencies of prior art

Method used

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  • Channel power equalizing method for optical fiber Raman amplifier for wave division multiplexing communication system
  • Channel power equalizing method for optical fiber Raman amplifier for wave division multiplexing communication system
  • Channel power equalizing method for optical fiber Raman amplifier for wave division multiplexing communication system

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Embodiment Construction

[0101] According to an embodiment of the output power clamping FRA of the present invention, with reference to the accompanying drawings, the detailed description is as follows:

[0102] figure 2 Shown is a FRA using five wavelengths, and the transmission fiber is 100km of standard common single-mode fiber (SMF). It is used in 84-channel C+L band DWDM optical communication system, the wavelength range is 1529.13-1602.7nm, the signal light is input into the transmission fiber from the F1 end, the minimum channel interval is 0.4nm, and the input spectrum is as follows image 3 shown. Diode pump lasers with five wavelengths (1423nm, 1433nm, 1443nm, 1463nm, 1493nm) are combined by the pump combiner MUX1, and then injected into the transmission fiber from the F2 end of the optical fiber through the pump signal combiner MUX2. Analyzer (OSA), OSA monitors the output spectrum from the 0.5% output port (102) of the output signal splitter Tap1, and the measured value at this point (in...

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Abstract

The channel power equalization method of optical fibre Raman amplifier in wavelength division multplexing communication system relates to optical amplifier technology. It is characterized by that under the condition of that assuming that the Raman gain coefficient spectrum between pumping lights and signal lights is triangular form and the difference of transmission loss between signal lights and between different pumping lights can not be regarded between the power regulation quantity of input light of multi-wavelength pumping light and mean value of channel output power and grade a linear relation can be created, then according to the difference between the ouput power of FRA monitored by computer through optical power monitoring module and restrained object power the correspondent regulation quantity of every pumping lightpower can be calculated.

Description

technical field [0001] The channel power equalization method of optical fiber Raman amplifier in wavelength division multiplexing communication system belongs to the technical field of high-speed broadband optical fiber communication and optical amplifier, especially relates to the method of channel power dynamic equalization and power equalization in wavelength division multiplexing (WDM) optical fiber communication network fiber Raman amplifier (FRA). Background technique [0002] Wavelength division multiplexing (WDM) optical fiber communication is one of the pillars of modern communication systems, and is currently developing towards higher speed, larger capacity, and longer distances; in addition, the use of broadband user access equipment and interactive multimedia transmission The development of new services such as WDM optical communication network with the goal of realizing high-speed and large-capacity broadband integrated services has become a "hot spot" in resear...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/18H04J14/02G02F1/39H04B10/294
Inventor 彭江得冯雪张巍刘小明
Owner TSINGHUA UNIV
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