Wavelength division multiplex optical transmission system, and transmission method

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...

AI Technical Summary

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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