设计了一种新型的高非线性低损耗光子晶体光纤(PCF), 在1.55μm处可获得35.78W-1·km-1的高非线性系数, 损耗为2.5dB/km。提出了一种基于高非线性光子晶体光纤交叉相位调制的波长转换系统, 当泵浦光波长为1565nm、功率为0dBm, 信号光波长为1545nm、功率为10dBm, 滤波器波长为1565.2nm、带宽为0.1nm时, 得到最佳的波长转换效应。

Designed is a new type of photonic crystal fiber (PCF) with high nonlinearity and low loss, and it gives high nonlinear coefficient of 35.78W-1·km-1 and low loss of 2.5db/km at the wavelength of 1.55μm. Then, a wavelength conversion system based on the crossphase modulation (XPM) of the high nonlinear photonic crystal fiber is proposed. Experimental results show that when the wavelength and power of the pump light are 1565nm and 0dBm respectively, the wavelength and power of the signal light are 1545nm and 10dBm respectively, and the wavelength and bandwidth of the filter are 1565.2nm and 0.1nm respectively, the system can obtain the best wavelength conversion effect.