| 基于长周期光纤光栅的可调谐光滤波器设计 |
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| 引用本文： | 方宏,秦曦,裴丽,简水生.基于长周期光纤光栅的可调谐光滤波器设计[J].光电子．激光,2005,16(1):5-8,27. |
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| 作者姓名： | 方宏 秦曦 裴丽 简水生 |
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| 作者单位： | 北京交通大学光波技术研究所,北京,100044;北京交通大学光波技术研究所,北京,100044;北京交通大学光波技术研究所,北京,100044;北京交通大学光波技术研究所,北京,100044 |
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| 基金项目： | 国家"863"计划资助项目(2001AA313020),国家自然科学基金资助项目(60337010),霍英东基金资助项目(91062) |
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| 摘 要： | 分析了长周期光纤光栅(LPFGs)透射谱受外界环境折射率变化影响的特性及其原理,进而提出了一种新型的可调谐光滤波器的设计思路．并运用分段光栅的矩阵分析法对其进行了具体的计算。此种光滤波器具有滤波精度高、可实现滤波波长和深度单独、连续调谐及全光纤性等优点,滤波波长调谐范围可达15nm,衰耗深度调谐范围达9dB。
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| 关 键 词： | 可调谐光滤波器 长周期光纤光栅(LPFG) 外界折射率 |
| 文章编号： | 1005-0086(2005)01-0005-04 |
Designing of Tunable Optical Filter Based on Long-period Fiber Grating |
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| FANG Hong.Designing of Tunable Optical Filter Based on Long-period Fiber Grating[J].Journal of Optoelectronics·laser,2005,16(1):5-8,27. |
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| Authors: | FANG Hong |
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| Abstract: | The characteristic of the change in wavelength of a long-period fiber gratings(LPFGs) attenuation band was analyzed with changes in external index of refraction in detail.Then,based on this characteristic of LPFGs,the designing of a new type of tunable optical filter was put forward.And it was calculated concretely using matrix method of analyzing piecewise-uniform LPFGs.It is concluded that this kind of optical filter has advantages of high precision,independently and continuously tuning of resonance wavelength and peak loss,and all-fiber in-line device.The tuning range of filter wavelength reaches 15 nm,and the tuning range of peak loss reaches 9 dB. |
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| Keywords: | tunable optical filter long-period fiber grating(LPFG) external index of refraction |
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