| 用于应力传感的双芯光纤马赫-曾德尔干涉仪 |
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| 引用本文： | 范林勇.用于应力传感的双芯光纤马赫-曾德尔干涉仪[J].光电子．激光,2010(10):1488-1491. |
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| 作者姓名： | 范林勇 |
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| 作者单位： | 北京交通大学光波技术研究所全光网络与现代通信网教育部重点实验室; |
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| 基金项目： | 国家自然科学基金资助项目(60771008); 北京市自然科学基金资助项目(4082024); 教育部博士点基金资助项目(200800040002) |
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| 摘 要： | 将一根单模双芯光纤(TCF)熔接在两根单模光纤(SMF)间,实验制得双芯光纤马赫-曾德尔干涉仪(MZI)型梳状滤波器。用干涉原理分析了器件的传输谱相邻峰值的波长间隔与波长、TCF长度和两纤芯间有效折射率差的关系。结果表明,在滤波器梳状传输谱中的某中心波长处,相邻峰值的波长间隔与该中心波长的平方成正比,与TCF长度和两纤芯间有效折射率差的乘积成反比。实验检测了所制器件的应力特性,结果表明在轴向微应力的作用下,器件的传输谱向短波长方向移动,且微应力敏感度为-0.64 pm/με。
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| 关 键 词： | 梳状滤波器 双芯光纤(TCF) 马赫-曾德尔干涉仪(MZI) 应力 光纤传感 光纤通信 |
M-Z interferometer using a twin-core fiber for strain sensing |
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| FAN Lin-yong.M-Z interferometer using a twin-core fiber for strain sensing[J].Journal of Optoelectronics·laser,2010(10):1488-1491. |
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| Authors: | FAN Lin-yong |
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| Affiliation: | FAN Lin-yong,ZHAO Rui-feng,JIANG Wei-wei,FENG Suchun,ZHENG Si-wen,LI Huan-lu,PEI Li,JIAN Shui-sheng (Key Laboratory of All Optical Network & Advanced Telecommunication Network of Education Ministry of China,Institute of Lightwave Technology,Beijing Jiaotong University,Beijing 100044,China) |
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| Abstract: | A comb-filter based on fiber Mach-Zehnder interferometer(MZI) is fabricated by placing a section of single mode twin-core fiber(TCF) between two single mode fibers(SMFs).The relationships between the wavelength space between the adjacent transmission peaks of the transmission spectrum of the MZI and the wavelength,the length of the TCF and the effective index difference between the two cores are analyzed by using the interference theory.The results show that when a central wavelength is set,the wavelength s... |
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| Keywords: | comb-filter twin-core fiber(TCF) Mach-Zehnder interferometer(MZI) strain optical fiber sensing optical fiber communication |
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