Method and system for determining optical dispersion displacement optical fiber C band transmission system

Abstract

The invention disclose a conformation method of a kind of dispersion displacement fiber (G.653) band C transmission system, the method confirms the relay transmission series of the system firstly. Then the method uses above relay series to confirm the minimal simplex wave input power and the maximal simplex wave input power of G.653 fiber amplifier, further confirms the maximal transmission distance. Finally, the method confirms proper compensation plan according to the dispersion coefficient and the simplex transmission distance of G.653 fiber. The invention also discloses a system according to above method, which can use the G.653 fiber resources fully.

Description

technical field [0001] The invention relates to a method for determining parameters in an optical communication system, in particular to a method for determining a C-band transmission system of a dispersion-shifted optical fiber (G.653 optical fiber). Background technique [0002] At present, wavelength division multiplexing signals are mainly transmitted by G.652 optical fiber and G.655 optical fiber, and G.653 optical fiber is mainly used for single-wavelength signal transmission due to serious nonlinear effects. With the continuous improvement of wavelength division multiplexing technology, if the G.653 optical fiber is still only used for single-wavelength transmission, a large amount of transmission resources will be wasted. In order to make full use of a large number of G.653 optical fiber resources that have been laid in the world and develop the G.653 optical fiber transmission market, it is of great significance to use G.653 optical fiber to transmit Dense Wavelengt...

AI Technical Summary

Problems solved by technology

However, the wavelength allocation obtained by the completely unequal channel spacing method cannot be compatible with the G.652 and G.655 optical fiber C-band 320G DWDM systems. If the two systems can be integrated and used, a dedicated wavelength division multiplexer / demultiplexer and modification are required. Wavelength conversion devices, and changing amplifier performance parameters, are difficult to implement

At the same time, in the current scheme of completely unequal channel spacing, only the channel spacing reference of the 8-wave DWDM transmission system of G.653 optical fiber is determined, and the system parameter determination method and specific system parameters, such as networking mode and fiber input power Control, etc., the industry has not yet had a solution, and these parameters are very important to the G.653 fiber C-band DWDM transmission system, because in the method of completely unequal channel spacing, due to the particularity of the G.653 fiber, nonlinear The FWM effect, especially the FWM effect, still has an important impact, and it is still difficult to ensure the long-term stable operation of the system. Moreover, the current solution is still very limited in the use of resources in the C-band of G.653 fiber

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