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分析了光纤光栅色散补偿系统中的串扰,并比较了几种常用的多波长光纤光栅色散补偿器的串扰特性,结合串联的窄带光纤光栅和取样光纤光栅的优点,提出一种抑制光纤光栅色散补偿系统串扰的方法.它通过在邻近信道间引入随机时延差,既能改善取样光纤光栅的线性串扰特性,又能抑制交叉相位调制效应和四波混频等非线性串扰.使用该方法可以得到具有低串扰的多波长光纤光栅色散补偿器.
The crosstalk in fiber grating dispersion compensation system is analyzed and the crosstalk characteristics of several commonly used multi-wavelength fiber grating dispersion compensators are compared. Combining the advantages of narrowband fiber grating and sampling fiber grating in series, System crosstalk by introducing random delay differences between adjacent channels, which can not only improve the linear crosstalk characteristics of the sampled FBG but also suppress the nonlinear crosstalk such as cross-phase modulation effect and four-wave mixing, etc. By using this method, Multiwavelength Fiber Grating Dispersion Compensator with Low Crosstalk.