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Broad band dispersion compensation method and fibre-optical communication system using the method

An optical fiber communication system and dispersion compensation technology, applied in transmission systems, electromagnetic wave transmission systems, electrical components, etc., can solve the problems of reducing the line span, reducing the power budget of optical lines, and being unsuitable for practical applications, and reducing dispersion compensation. Effect

Inactive Publication Date: 2005-01-05
FENGHUO COMM SCI & TECH CO LTD
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Problems solved by technology

On the other hand, if the EDFA method is used, if the FPDC loss is compensated first, and then the optical fiber line loss is compensated, it is necessary to adopt the method of splitting the bands and then combining the waves twice, which will not reflect the benefits of broadband dispersion compensation; if the FPDC is placed in If EDFA is used after the optical fiber line, the power budget of the optical line will be reduced, which is equivalent to reducing the line span, which is not suitable for practical application

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  • Broad band dispersion compensation method and fibre-optical communication system using the method
  • Broad band dispersion compensation method and fibre-optical communication system using the method
  • Broad band dispersion compensation method and fibre-optical communication system using the method

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Embodiment Construction

[0030] The specific implementation manner of the present invention will be explained in detail below in conjunction with the accompanying drawings.

[0031]The system of the present invention specifically uses a fiber passive dispersion compensator (FPDC), also called a dispersion compensating fiber (DCF, Disperse Compensate Fiber), to perform broadband dispersion compensation. Naturally, adding these passive dispersion compensation devices will bring additional insertion loss to the entire optical fiber communication system; therefore, the system of the present invention uses a broadband Raman optical amplifier to compensate the insertion loss generated by the dispersion compensation device.

[0032] The method of the present invention directly performs dispersion compensation on a broadband optical signal such as an optical signal in the C+L band, and then directly performs broadband amplification on the broadband optical signal after dispersion compensation to compensate for...

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Abstract

This invention relates to a broadband dispersion compensation method combining with broadband light amplification and a light communication system using this method, especially suitable for (ULH ultra long haul). At the same time when applying broadband dispersion compensation fiber to compensate dispersion, this invention applies broadband Raman distribution light amplifier to compensate the insertion loss generated from dispersion compensation.

Description

technical field [0001] The present invention relates to an optical fiber communication system, more specifically, relates to a Dense Wavelength Division Multiplexing (Dense Wavelength Division Multiplexing) optical fiber communication system using a broadband dispersion compensation method. Background technique [0002] With the explosive growth of telecommunications services, especially data services represented by IP, people's demand for telecommunications transmission capacity is increasing day by day. At present, dense wavelength division multiplexing (DWDM) technology is usually used to realize long-distance optical signal transmission. Wavelength division multiplexing (WDM) technology is actually a multi-channel optical transmission technology, that is, light of each different wavelength, also called a channel, is a channel carrying a specific bit rate, and then they are multiplexed A single optical signal is transmitted in a single optical fiber. When receiving, use ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/2525
Inventor 杨铸刘贤炳席申娥张强
Owner FENGHUO COMM SCI & TECH CO LTD