| 级联长周期光纤光栅对的干涉谱分析及其在多信道滤波器中的应用 |
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| 引用本文： | 刘玉敏,俞重远,韩利红,芦鹏飞,徐子欢.级联长周期光纤光栅对的干涉谱分析及其在多信道滤波器中的应用[J].光子学报,2008,37(8):1558-1562. |
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| 作者姓名： | 刘玉敏 俞重远 韩利红 芦鹏飞 徐子欢 |
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| 作者单位： | 北京邮电大学,理学院,光通信与光波技术教育部重点实验室,北京,100876 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)，国家高技术研究发展计划(863计划)，the Open Project of State Key Laboratory on Integrated Optoelectronics |
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| 摘 要： | 分析了由光纤级联的两个相同的长周期光纤光栅形成的干涉谱。根据设计中的关键技术,利用粒子群优化算法设计了长周期光纤光栅传输损耗为50％的平坦传输损耗谱.将相同的两个优化设计的长周期光纤光栅级联,可以实现一种实用的可调谐多信道隔离滤波器.讨论了级联长周期光纤光栅对之间光纤的偏振特性对干涉谱的影响.
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| 关 键 词： | 衍射和光栅 全光器件 长周期光栅 滤波器 |
| 收稿时间： | 2005-07-07 |
| 修稿时间： | 2006-09-26 |
Analysis of Interference Spectrum of Separated Long-Period Fiber Grating Pairs and Its Applications |
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| LIU Yu-min,YU Zhong-yuan,HAN Li-hong,LU Peng-fei,XU Zi-huan.Analysis of Interference Spectrum of Separated Long-Period Fiber Grating Pairs and Its Applications[J].Acta Photonica Sinica,2008,37(8):1558-1562. |
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| Authors: | LIU Yu-min YU Zhong-yuan HAN Li-hong LU Peng-fei XU Zi-huan |
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| Abstract: | The interference transmission spectrum of cascaded long-period fiber gratings, which is inserted a section of standard fiber, is investigated. Based on the design of key aspects, the particle swarm optimization (PSO) algorithm is used to design a flattened broadband transmission spectrum with transmission loss of nearly 50%. By cascading two such identical long period fiber gratings, a useful tunable multi-channel isolation filter is designed. The influence of polarization of the inserted fiber on the interference spectrum is discussed. |
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| Keywords: | Diffraction and grating All-optical devices Long period grating PSO |
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