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文章提出了一种基于10m长的光子晶体光纤(PCF)Sagnac环结构的超宽带全光波长转换方案。所使用的PCF光纤具有非线性系数高、超宽带范围内的色散平坦等特性,可实现基于四波混频和交叉相位调制效应的全光波长转换开关。通过调节连续光信号或37 MHz飞秒激光器产生的泵浦光的光波长,实验验证了该结构在C+L波段范围内的超宽带可调谐特性。同时还测量了该结构的时域响应,验证了波长转换开关特性。
This paper presents an ultra-wideband all-optical wavelength conversion scheme based on a 10m long PCF Sagnac ring structure. The PCF fiber used has the characteristics of high non-linearity coefficient and flattening dispersion in the ultra-wideband range, enabling all-optical wavelength conversion switch based on four-wave mixing and cross-phase modulation effects. By adjusting the optical wavelength of the pump light generated by a continuous optical signal or a 37 MHz femtosecond laser, the ultrahigh-band tunable characteristic of the structure in the C + L band is experimentally verified. At the same time, the time-domain response of the structure was measured and the characteristics of the wavelength conversion switch were verified.