本文基于光纤布喇格光栅和光环行器提出了2×2双向光交叉连接器光串扰分析模型.分析了基于新型模型的相干串扰与非相干串扰的原理、特性以及它们对系统性能的影响.我们采用蒙特卡洛方法进行仿真实验,仿真结果表明,新型双向光交叉连接器的相干串扰将随着波长数的增加而增加且具有较小的功率代价特性.这种新型的双向光交叉连接器通过级联可扩展到N×N的波长路由.它在未来的全光网络中有较好的应用前景.

An analytical model of intra-channel optical crosstalk in 2 × 2 fiber Bragg grating optical circulator-based Bidirectional Optical Cross Connect (BOXC) is presented. Both coherent and incoherent intra-channel crosstalk of our earlier proposed BOXC was analyzed and the impact of both kinds of crosstalk on the BER power penalty was examined.The Monte Carlo simulation was used to characterize the power probability distribution due to the crosstalk under various conditions. Simulation results show that the coherent crosstalk is higher than incoherent crosstalk, and the crosstalk increase in the number of the wavelength. The proposed BOXC is scalable to N × N ports owing to the cascade-ability of individual routing modules, which perform routing of specific wavelength channels. The power penalty can be decreased significantly in the proposed structure.