| 取样光纤光栅的多层薄膜分析新方法 |
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| 引用本文： | 余华清,姜向东.取样光纤光栅的多层薄膜分析新方法[J].光学技术,2005,31(3):460-462. |
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| 作者姓名： | 余华清 姜向东 |
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| 作者单位： | 孝感学院物理系,孝感,432000;西南交通大学,应用物理系,成都,610031;西南交通大学,应用物理系,成都,610031 |
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| 基金项目： | 西南交通大学基础发展研究基金资助(2002B03) |
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| 摘 要： | 将取样光纤光栅看成一个多层薄膜体系,每层膜用界面传输矩阵和膜层传输矩阵表示,将每层的传输矩阵相乘后得到取样光纤光栅的反射谱。数值计算结果表明:取样光纤光栅的总长度、折射率调制深度、占空比、取样周期和啁啾系数等参数都会影响反射谱的峰值和带宽。该模型的精度满足设计要求。
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| 关 键 词： | 取样光纤光栅 多层膜 传输矩阵 反射谱 |
| 文章编号： | 1002-1582(2005)03-0460-03 |
| 修稿时间： | 2004年8月5日 |
New multiple_thin films analysis method on sampled fiber grating |
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| YU Hua-qing,JIANG Xiang-dong.New multiple_thin films analysis method on sampled fiber grating[J].Optical Technique,2005,31(3):460-462. |
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| Authors: | YU Hua-qing JIANG Xiang-dong |
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| Affiliation: | YU Hua-qing~ |
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| Abstract: | Sampled fiber grating is looked on as a multiple_thin film stack. Each film is represented by the interface T_matrix and layer T_matrix. The reflective spectrum is obtained by multiplying the T_matrix of each film. The numerical calculation results showed that the maximum of reflective spectrum and bandwidth of super_structured fiber grating depends on its total length, modulating the amplitude of the refractive index, duty cycle T, sampling period P and chirped coefficient C. The model's accuracy can be satisfied. |
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| Keywords: | sampled fiber grating multiple_thin films transfer(T) matrix reflective spectrum |
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