| 一种重构强反射光纤布拉格光栅的新方法 |
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| 引用本文： | 高志鹏,余震虹,邢丽华.一种重构强反射光纤布拉格光栅的新方法[J].光学学报,2006,26(7):91-996. |
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| 作者姓名： | 高志鹏 余震虹 邢丽华 |
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| 作者单位： | 江南大学控制科学与工程研究中心通信研究所,无锡,214122 |
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| 摘 要： | 阐述了光纤布拉格光栅的重构理论及被广泛采用的剥层算法,指出了剥层算法在重构强反射光栅时的弊端,提出了一种剥层算法和遗传算法相结合的方法来重构强反射光栅。此方法先由剥层算法得到光栅耦合系数的初始值,再依据重新采样后的初始值创建初始种群,通过遗传算法实现对剥层算法所得结果的后半部分进行优化。数值模拟表明此方法有效地改善了剥层算法的结果,具有较快的收敛速度和很好的精度,能适用于大多数强反射光栅的重构。
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| 关 键 词： | 光纤光学 光栅重构 遗传算法 剥层算法 |
| 文章编号： | 0253-2239（2006）07-0991-6 |
| 收稿时间： | 2005-08-10 |
| 修稿时间： | 2005-11-16 |
A Novel Method for Reconstructing Strongly Reflecting Fiber Bragg Gratings |
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| Gao Zhipeng,Yu Zhenhong,Xing Lihua.A Novel Method for Reconstructing Strongly Reflecting Fiber Bragg Gratings[J].Acta Optica Sinica,2006,26(7):91-996. |
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| Authors: | Gao Zhipeng Yu Zhenhong Xing Lihua |
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| Institution: | Institute of Communication, Research Center of Control Science and Technology, Southern Yangtze University, Wuxi 214122 |
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| Abstract: | The theory of fiber Bragg grating(FBG) reconstruction and the widely used layer-peeling(LP) algorithm are illustrated.The deficiency of LP algorithm in reconstructing strongly reflecting FBGs is pointed out and a hybrid method of combining genetic algorithm with LP algorithm is proposed.In this method,the preliminary values of the grating couple coefficients are obtained by using LP algorithm,and then genetic algorithm is employed to optimize the latter half of the results of the LP algorithm according to the re-sampled preliminary value with which the starting population of genetic algorithm are created.By numerical simulation,the novel method is proved to be fast convergent,very accurate,suitable for reconstructing most of strongly reflecting FBGs,and improve the result of LP algorithm effectively. |
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| Keywords: | fiber optics grating reconstruction genetic algorithm layer-peeling algorithm |
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