Device for compensating non-linear damage of optical fiber

Abstract

The invention discloses a device for compensating a non-linear damage of optical fiber, belongs to an optical fiber communication device, solves the problem of limitation on transmission speed rate or higher complexity of the conventional restraint device, and guarantees the transmission speed rate of an optical fiber system during compensation of the non-linear damage of the optical fiber. The device comprises an arbitrary waveform generator, a driving amplifier, a first electro-optical phase modulator, a dispersion medium and a second electro-optical phase modulator, wherein a clock signal is input to a trigger end of the arbitrary waveform generator; the arbitrary waveform generator outputs a periodic parabola type waveform signal, and the periodic parabola type waveform signal is amplified by using the driving amplifier into an electric driving signal and sent to driving ends of the first electro-optical phase modulator and the second electro-optical phase modulator at the same time; an optical transmitter outputs a data signal to an input end of the first electro-optical phase modulator; and an output end of the second electro-optical phase modulator is connected with an optical fiber link. The invention has the advantages that: an adopted optical device is simple; the bit error rate of signal receiving reaches 10<-7> to 10<-9>; optical power cost is reduced by about 3 dB; and the device is applicable to a long-distance high-capacity and ultra-high-speed optical fiber communication system of all kinds of modulation formats and transmission speed rate.

Description

technical field [0001] The invention belongs to optical fiber communication devices, in particular to an optical fiber nonlinear damage compensation device, which is applied in a high-speed optical fiber communication system to compensate the nonlinear damage in the optical fiber communication system and improve system performance. Background technique [0002] Optical fiber communication has become a basic part of modern communication networks. With the explosive growth of information such as voice, image and data, especially the rapid rise of the Internet, it is an inevitable trend to continuously expand the capacity of optical fiber communication. Wavelength Division Multiplexing (WDM) and Erbium-doped Fiber Amplifier (EDFA) are the best means to fully exploit the bandwidth capability of optical fiber and realize large-capacity and high-speed communication. In high-speed long-distance optical fiber communication systems, 100G and above is the current development trend, an...

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Problems solved by technology

[0005] The invention provides an optical fiber nonlinear damage compensation device, which solves the problem that the transmission rate of the existing elec...

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