All-optical wavelength converter of optical solitons on basis of weak light regulation

Abstract

The invention provides an all-optical wavelength converter of optical solitons on the basis of weak light regulation and belongs to the technical field of optical communication. The all-optical wavelength converter is composed of a femtosecond pulse light source, a wide tuning signal source, a coupler, an optical amplifier, an optical coupler and a high nonlinear photonic crystal fiber. Femtosecond optical pulses output by the femtosecond pulse light source and weak control light output by the wide tuning signal source are coupled by the optical coupler and enter the optical amplifier to be amplified, and the cross-gain modulation effect is generated. The amplified light is coupled into the high nonlinear photonic crystal fiber through the optical coupler to generate the optical solitons. The principle of the all-optical wavelength converter is that due to the fact that the cross-gain modulation effect enables the weak control light to obtain different gains at positions where wavelengths are different in the gain bandwidth of the optical amplifier, original peak power of femtosecond pulses is changed, the regulated femtosecond pulses are led into a section of the high nonlinear photonic crystal fiber to generate Raman optical solitons, wherein the wavelengths of the Raman optical solitons can be regulated continuously, and wavelength conversion from a 1.5-micrometer optical fiber communication waveband to a 2-micrometer atmospheric communication waveband is achieved.

Description

technical field [0001] The invention belongs to the technical field of optical communication, and in particular relates to an all-optical wavelength converter based on weak light regulation and control of optical solitons. Background technique [0002] The mid-infrared 2 micron band is an important atmospheric communication window, especially in the military field, which has huge potential application value. How to achieve wavelength conversion between the existing 1.5-micron optical fiber communication band and the 2-micron atmospheric communication window has become a key factor in solving the integration between the existing 1.5-micron optical fiber communication system and the 2-micron atmospheric communication system. The all-optical wavelength converter is to convert multiple optical signals with the same wavelength into optical signals of different wavelengths with a wavelength converter, multiplex them in the same optical fiber for transmission, and then demultiplex ...

AI Technical Summary

Problems solved by technology

[0003] Although the traditional all-optical wavelength converters can achieve a wide range of wavelengths, their main applications are concentrated in the 1.5-micron communication band, and it is difficult to cover the 2-mi

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