一种基于碲基光纤的拉曼放大器

A tellurite-based Raman fiber amplifier

利用拉曼增益的非对称高斯扩展模型,计算得到碲基光纤的拉曼增益谱,并与N信道单向受激拉曼散射的前向稳态方程相结合,设计一种基于碲基光纤的拉曼放大器。采用数值模拟的方法,得到在32信道密集波分复用系统中基于碲基光纤的增益随传输距离变化的曲线,及恒定碲基光纤长度下,不同波长信号的拉曼增益值。结果分析表明,在传输距离为430m、信道间隔为0.4nm时,该放大器的最大增益系数比硅基光纤拉曼放大器的增益系数大6.01倍。

The tellurite-based fiber Raman gain spectrum is obtained based on inhomogeneous Gaussian broadened model of Raman gain. A tellurite-based Raman fiber amplifier is designed by combining N-channel unidirectional steady state with stimulated Raman scattering equations. The relationship between Raman gain and transmission distance in 32-channel tellurite-based fiber DWDM system are calculated with numerical simulation. Moreover, the typical Raman gain val- ues at different wavelengths are investigated under constant fiber length. Results show that the biggest gain of the amplifier coefficient from this amplifier is 6.01 times than that by the silicon- based optical fiber Raman amplifier under that condition of 430 m transmission distance and 0.4 nm channel spacing.