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基于偏振干涉的光纤光栅传感解调方法
引用本文:张锦龙,余重秀,王葵如,赵德新,林妹妹,李成.基于偏振干涉的光纤光栅传感解调方法[J].物理学报,2009,58(6):3988-3995.
作者姓名:张锦龙  余重秀  王葵如  赵德新  林妹妹  李成
作者单位:(1)北京邮电大学电子工程学院,北京 100876; (2)北京邮电大学电子工程学院,北京 100876;河南大学物理与电子学院,开封 475001
基金项目:国家自然科学基金(批准号:60677003)、教育部新世纪优秀人才支持计划(批准号:NCET-07-0111)和教育部光通信与光波技术重点实验室(北京邮电大学)开放基金项目资助的课题.
摘    要:提出了一种新型的应用于光纤布拉格光栅传感器的波长移动探测方案.研究基于保偏光纤的光纤环镜结构并建立理论模型,分析其输入光波长和输出光功率分配特性并进行数值仿真和实验验证.结果证明该装置结构简单、稳定性好、检测精度高且可通过调整光纤环镜参数调节测量范围和精度.在大于1 nm解调范围内,波长平均解调精度小于1 pm. 关键词: 传感解调 偏振干涉 光纤环镜

关 键 词:传感解调  偏振干涉  光纤环镜
收稿时间:2008-06-14

Fiber grating sensor demodulation method based on polarization interference
Zhang Jin-Long,Yu Chong-Xiu,Wang Kui-Ru,Zhao De-Xin,Lin Mei-Mei,Li Cheng.Fiber grating sensor demodulation method based on polarization interference[J].Acta Physica Sinica,2009,58(6):3988-3995.
Authors:Zhang Jin-Long  Yu Chong-Xiu  Wang Kui-Ru  Zhao De-Xin  Lin Mei-Mei  Li Cheng
Abstract:A novel wavelength shift detection scheme for use in fiber Bragg grating sensing systems is proposed. The structure of the polarization maintaining fiber loop mirror is studied and its theoretical model is established. In addition, the distribution characteristics of the input light wavelength and the output power are analysed. Moreover, numerical simulation and experimental validation are also performed. The results show that the device has simple structure, high stability and high detection precision. The measuring range and the precision can be adjusted by varying the parameters of the fiber loop mirror. In the demodulation range larger than 1 nm, the average precision of the wavelength demodulation is lower than 1 pm.
Keywords:sensor demodulation  polarization interference  fiber loop mirror
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