基于相敏放大的MPSK信号再生性能研究

发布时间：2018-05-09 01:07

本文选题：简并四波混频(DFWM) + 相位再生　；参考：《光电子·激光》2017年08期

【摘要】：详细描述了泵浦消耗情形下高非线性光纤中(HNLF)简并四波混频(DFWM)的解析求解过程,结合第1类、第3类椭圆积分和雅阁比椭圆函数给出了个导波光的输出功率和相位的表达式。为了方便计算和分析,给出了特殊函数在Matlab中的计算命令。利用解析式分析了基于DFWM实现多电平再生的必要条件,研究了相敏放大过程中泵浦光初始相位和初始功率对MPSK信号相位转移曲线的影响。研究表明,调节泵浦光初始相位可使相敏放大器(PSA)的相位转移曲线与输入信号的多电平相位匹配,优化光纤长度或泵浦光初始功率可获得最大的多电平相位再生抖动抑制性能,且优化的初始泵浦光功率与光纤长度近似呈反比。采用OptiSystem软件仿真了基于PSA的8PSK信号再生器的性能,仿真结果与理论分析一致;当归一化输入相位抖动为0.1时,该相位再生器的抖动抑制比为4.62,能够使系统的符号错误率降低2个数量级。
[Abstract]:The analytical solution of degenerate four-wave mixing (DFWM) of HNLFs in high nonlinear optical fiber under pump consumption is described in detail. The expressions of output power and phase of guided light are given in combination with the first class, the third type elliptic integral and the Jacobian elliptic function. For the convenience of calculation and analysis, the calculation commands of special functions in Matlab are given. The necessary conditions for multilevel regeneration based on DFWM are analyzed by using the analytical formula. The effects of the initial phase and initial power of pump light on the phase transfer curve of MPSK signal during phase sensitive amplification are studied. It is shown that adjusting the initial phase of the pump light can match the phase transfer curve of the phase sensitive amplifier PSAs with the multi-level phase of the input signal. Optimizing the length of the fiber or the initial power of the pump light can obtain the maximum performance of the multi-level phase regeneration jitter suppression. The optimized initial pump power is approximately inversely proportional to the fiber length. The performance of the 8PSK signal regenerator based on PSA is simulated by OptiSystem software, and the simulation results are consistent with the theoretical analysis, when the normalized input phase jitter is 0.1, The jitter suppression ratio of the phase regenerator is 4.62, which can reduce the symbol error rate of the system by two orders of magnitude.
【作者单位】：电子科技大学光纤传感与通信教育部重点实验室;
【基金】：国家自然科学基金(61271166,61671108) 教育部长江学者和创新团发展计划(IRT1218)资助项目
【分类号】：TN929.1

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