| 环境折射率变化对长周期光栅特性影响的研究 |
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| 引用本文： | 童治,魏淮,王目光,王智,简水生.环境折射率变化对长周期光栅特性影响的研究[J].光学学报,2002,22(9):1088-1091. |
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| 作者姓名： | 童治 魏淮 王目光 王智 简水生 |
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| 作者单位： | 北方交通大学光波技术研究所,北京,100044 |
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| 基金项目： | 国家“8 6 3”计划 (86 3 317 0 2 0 4 99)资助课题 |
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| 摘 要： | 将长周期光纤光栅简化为三层阶跃折射率波导结构 ,采用弱导标量近似和泄漏模式的概念结合耦合模理论较全面地、定量地分析了环境折射率变化对长周期光纤光栅谐振峰位置和深度等特性的影响 ,获得了一些有益的结论 ,与实验符合得很好
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| 关 键 词： | 长周期光纤光栅 标量近似 泄漏模式 耦合模 |
| 收稿时间： | 2001/7/30 |
Effect of Change of Ambient Refractive Index on Characteristics of Long-Period Fiber Gratings |
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| Tong Zhi,Wei Huai,Wang Muguang,Wang Zhi,Jian Shuisheng.Effect of Change of Ambient Refractive Index on Characteristics of Long-Period Fiber Gratings[J].Acta Optica Sinica,2002,22(9):1088-1091. |
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| Authors: | Tong Zhi Wei Huai Wang Muguang Wang Zhi Jian Shuisheng |
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| Abstract: | A long-period fiber grating is simplified as a three-layer step-index waveguide. By using the concepts of scalar approximation and leaky-mode and the couple-mode theory, the influence of the change of ambient refractive index upon the LPG′s characteristics such as resonance wavelength and peak loss in detail is analyzed. Some useful conclusions are obtained which agree with the experimental results very well. |
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| Keywords: | long-period fiber grating scalar approximation leaky mode couple-mode |
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