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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(英文)

Analysis of Interference Spectrum of Separated Long-Period Fiber Grating Pairs and Its Applications
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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. 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.
作者 刘玉敏 俞重远 韩利红 芦鹏飞 徐子欢
机构地区 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
出处 《光子学报》 EI CAS CSCD 北大核心 2008年第8期1558-1562,共5页 Acta Photonica Sinica
基金 the National Basic Research Program of China(2003CB314901) the National High Technology Project of China(2003AA311070) the Open Project of State Key Laboratory on Integrated Optoelectronics
关键词 衍射和光栅 全光器件 长周期光栅 滤波器 Diffraction and grating All-optical devices Long period grating PSO
分类号 TN25 [电子电信—物理电子学]
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参考文献11

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光子学报
2008年 第8期

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