Chromatic aberration compensation method and optical fiber transmission system

Abstract

The invention provides a dispersion compensation method and an optical fiber transmission system which belong to the optical fiber communication filed. Aiming to solve the shortcoming in the prior art that any on-line DCF dispersion compensation technology is not provided for long distance, and the nonlinear effect in the dispersion compensation technology is restrained, the invention provides the dispersion compensation method, which includes the steps that after a sending end implements electric pre-compensation treatment on a digital signal to be transmitted, a control electric / optical converter module outputs a distorted optical signal; after receiving the optical signal, a receiving end conducts a post compensation treatment after converting the optical signal into an electric signal, or converts the optical signal into the electric signal after implementing the post compensation treatment. The invention also provides the optical fiber transmission system, which includes a pre-compensation signal processing module, a light source, an electric / optical converter module, an optical fiber transmission line, an electric / optical converter module, and a post-compensation treatment module. The proposal of the invention can realize the improvement on the nonlinear effect influence, and can provide a flexible dispersion compensation proposal for the dynamic configurable network.

Description

Technical field [0001] The present invention relates to the field of optical fiber communication, in particular to a dispersion compensation method and an optical fiber transmission system. Background technique [0002] The phenomenon of signal waveform distortion caused by different frequency components of the signal transmitted in the optical fiber or various mode components of the signal at different transmission speeds is called chromatic dispersion. The effect of chromatic dispersion on optical transmission is to cause inter-symbol interference between data pulses. The damage caused by chromatic dispersion to system performance cannot be ignored. Generally, optical fiber transmission systems with a transmission rate of more than 10 Gbit / s require dispersion compensation technology to ensure the transmission function of the system. Currently, the widely used dispersion compensation technology realizes the dispersion compensation through the dispersion compensation fiber (DCF,...

AI Technical Summary

Problems solved by technology

Through simulation, it is found that if the dispersion compensation is concentrated at any end of the line, the effect of suppressing the nonlinear effect is very poor

[0009] In summary, the dispersion compensation methods in the prior art cannot meet the actual needs in terms of long-distance wireless DCF dispersion compensation and suppression of nonlinear effects

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