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提出了利用高非线性微结构光纤自相位调制效应进行全光再生的研究方案。分析了一组微结构光纤的色散和非线性特性。结果显示光纤的非线性系数与光纤结构有密切关系。通过减小有效模面积,可以提高光纤的非线性系数。采用一种高空气填充比的高非线性微结构光纤作为非线性介质,进行了基于自相位调制效应的全光再生研究。结果表明,由于微结构光纤的高非线性,采用较短的光纤长度就可以实现较好的再生效果。同时,输入微结构光纤的峰值功率、滤波器的参量选择对光再生的效果有重要的影响,它们必需满足一定要求,才能实现光再生。此外,对再生器的传输特性进行了研究。通过调整输入峰值功率和滤波器的参量,可以对不同宽度的光脉冲信号进行全光再生。
A research scheme of using all-optical regeneration of self-phase modulation effect of highly nonlinear microstructured optical fiber is proposed. The dispersion and nonlinearity of a group of microstructured fibers are analyzed. The results show that the nonlinear coefficient of optical fiber is closely related to the optical fiber structure. By reducing the effective mode area, the nonlinear coefficient of the fiber can be increased. A high nonlinear optical fiber with high air-filling ratio was used as a non-linear medium to study all-optical regeneration based on self-phase modulation. The results show that due to the high nonlinearity of the microstructured optical fiber, the shorter fiber length can achieve a better regeneration effect. At the same time, the input peak power of microstructured fiber, filter parameters have an important effect on the effect of light regeneration, they must meet certain requirements, in order to achieve light regeneration. In addition, the transmission characteristics of the regenerator were studied. By adjusting the input peak power and filter parameters, the optical pulse signal of different width can be all-optical regeneration.