Wavelength division multiplex optical transmission system, and transmission method

A transmission system and transmission method technology, applied in the wavelength division multiplexing optical transmission system and its transmission field, can solve the problems of inability to balance OSNR, inability to balance optical power and OSNR, etc., and achieve the effect of improving transmission performance

Active Publication Date: 2005-06-15
HUAWEI TECH CO LTD
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Problems solved by technology

[0018] The present invention proposes a wavelength division multiplexing optical transmission system and its transmission method to solve the problem in the prior art that the OSNR between the optical signals of each channel cannot be balanced in the WDM optical transmission system
[0019] The wavelength division multiplexing optical transmission system and its transmission method proposed by the present invention can also solve the problem that the optical power and OSNR between the optical signals of each channel cannot be simultaneously balanced in the prior art in the WDM optical transmission system

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  • Wavelength division multiplex optical transmission system, and transmission method
  • Wavelength division multiplex optical transmission system, and transmission method
  • Wavelength division multiplex optical transmission system, and transmission method

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Embodiment Construction

[0064] In the long-distance WDM optical transmission system, the OSNR and optical power of each channel optical signal are important parameters that affect the transmission performance. On the basis of the OSNR equalization of each channel optical signal, a technology that not only solves the OSNR equalization of each channel optical signal, but also solves the optical power equalization of each channel optical signal. Therefore, the transmission performance of the existing WDM optical transmission system is improved.

[0065] refer to Figure 4 , is a simplified module composition block diagram of the OSNR equalization subsystem and the optical power equalization subsystem in the WDM optical transmission system of the present invention. Wherein the OSNR equalization subsystem 110a mainly includes a first detection module 1, a first comparison module 2, a first storage module 5, a first control module 3 and an optical signal-to-noise ratio adjustment module 4; wherein the con...

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Abstract

The disclosed wavelength division multiplex (WDM) optical transmission system includes sending end for transmitting optical signal in each channel, receiving end in use for receiving optical signal from each channel, and optical fiber line of connecting the sending end with receiving end in use for transferring optical signal in each channel, and optical sub system for balancing ratio of S/N setup on optical fiber line for balancing ratio of S/N. WDM optical transmission method includes following steps: at sending end, with being wavelength division multiplexed, optical signal is transferred to optical filer line; in optical fiber line, balancing process is carried out for optical S/N ratio in each channel; at receiving end, process of demultiplexing optical signals is carried out for optical signal transferred from optical fiber line. The invention raises transmission performance of whole WDM optical transmission system.

Description

technical field [0001] The invention relates to the field of optical transmission systems, in particular to a wavelength division multiplexing optical transmission system for optical signal transmission and a transmission method thereof. Background technique [0002] With the gradual maturity of optical fiber communication technology, the wavelength division multiplexing (WDM, Wavelength Division Multiplexing) optical transmission system has been increasingly widely used. refer to figure 1 , is the topology diagram of the WDM optical transmission system. The specific transmission process of multiple optical signals with different wavelengths in the same optical fiber is as follows: [0003] Each transmitter 10 sends optical signals of different wavelengths to the wavelength division multiplexer 20 respectively; [0004] The wavelength division multiplexer 20 multiplexes the received optical signals of different wavelengths, and then sends the multiplexed optical signals to...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/294H04J14/02
Inventor 易兴文李从奇
Owner HUAWEI TECH CO LTD
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