论文部分内容阅读
本文把M.Eve提出的时域统计模型推广到频域以分析光纤链的带宽,并在此基础上提出了一种借助于间接确定相关系数来预言光纤链带宽的方法。预言数值与测试结果取得了良好的一致。本文还在WKB解的基础上进一步揭示了光纤的梯度剖面指数α偏离α_(opt)时对光均衡的影响,并提出了一最佳均衡条件。对5段光纤的连接实验表明光均衡明显地改善了整个光纤链的模色散特性,使带宽的长度关联指数下降到0.25。
In this paper, the time-domain statistical model proposed by M.Eve is extended to the frequency domain to analyze the bandwidth of the optical fiber chain. Based on this, a method of predicting the optical fiber chain bandwidth by means of indirectly determining the correlation coefficient is proposed. Prophecy values and test results achieved a good agreement. Based on the WKB solution, the paper further reveals the influence of the optical fiber gradient index α on the optical equalization when α deviates from α opt and proposes an optimal equalization condition. Experiments on five-segment optical fiber show that optical equalization significantly improves the mode dispersion of the entire optical fiber chain, reducing the bandwidth-related length index to 0.25.