利用传输矩阵法推导了Gires-Tournois(G-T)标准具的群时延和色散特性, 分析了将G-T标准具用于多通道色散补偿的原理, 并使用级联G-T标准具来提升色散补偿能力。介绍了一种基于温度控制的级联G-T标准具色散补偿装置; 通过控制各级标准具的温度来调整标准具内折射率参数, 以实现目标色散的拟合。利用Matlab软件进行仿真验证, 模拟结果表明: 该装置可以同时补偿C波段和L波段的全通道色散, 并且色散补偿精度高, 群时延抖动小, 符合高速率光通信系统色散补偿的要求。

Group delay and dispersion properties of a Gires-Tournois (G-T) etalon are deduced with the transfer matrix, the principle of using G-T etalon in multi-channel dispersion compensation is analyzed, and the cascaded G-T etalons are proposed to improve the dispersion compensation capacity. A dispersion compensation device based on cascaded G-T etalons with temperature control is introduced. When we control the inner temperature of each etalon, the refractive index of etalon can be adjusted, and the fitting for the target dispersion can be realized. The simulation is carried out with Matlab software. The simulation results show that the device could compensate all channel dispersion of both C and L bands with high dispersion compensation precision and small group delay ripple. In conclusion, the device can meet the dispersion compensation requirement of high speed optical communication system.