Phase-Sensitive Optical Time-Domain Reflectometer Based on a 120°-Phase-Difference Michelson Interferometer
A phase-sensitive optical time domain reflectometer （φ-OTDR） based on a 120°-phase-difference Michelson in- terferometer is proposed. The Michelson interferometer with arm difference of 4m is used to test the phase difference between the Rayleigh scattering from two sections of the fiber. A new demo...
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| Published in | Chinese physics letters Vol. 33; no. 5; pp. 22 - 25 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
01.05.2016
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| Subjects | |
| Online Access | Get full text |
| ISSN | 0256-307X 1741-3540 |
| DOI | 10.1088/0256-307X/33/5/050701 |
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| Abstract | A phase-sensitive optical time domain reflectometer （φ-OTDR） based on a 120°-phase-difference Michelson in- terferometer is proposed. The Michelson interferometer with arm difference of 4m is used to test the phase difference between the Rayleigh scattering from two sections of the fiber. A new demodulation method called the inverse transmission matrix demodulation scheme is utilized to demodulate the distributed phase from the backward scattering along the long fiber, The experimental results show that the 120°-phase-difference inter- ferometer φ-OTDR can detect the phase along the 3km fiber, and the acoustic signal within the whole human hearing range of 20 Hz-20 kHz is reproduced accurately and quickly. |
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| AbstractList | A phase-sensitive optical time domain reflectometer （φ-OTDR） based on a 120°-phase-difference Michelson in- terferometer is proposed. The Michelson interferometer with arm difference of 4m is used to test the phase difference between the Rayleigh scattering from two sections of the fiber. A new demodulation method called the inverse transmission matrix demodulation scheme is utilized to demodulate the distributed phase from the backward scattering along the long fiber, The experimental results show that the 120°-phase-difference inter- ferometer φ-OTDR can detect the phase along the 3km fiber, and the acoustic signal within the whole human hearing range of 20 Hz-20 kHz is reproduced accurately and quickly. |
| Author | 曹玉龙 杨飞 徐丹 叶青 蔡海文 方祖捷 |
| AuthorAffiliation | Shanghai Key Laboratory of All Solid-state Laser and Applied Techniques,Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800 University of Chinese Academy of Sciences, Beijing 100049 |
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| Cites_doi | 10.1016/j.optcom.2015.02.044 10.1109/JLT.2008.927777 10.1364/OE.23.022386 10.1109/JLT.2005.849924 10.1117/12.484911 10.1117/12.905657 10.1109/JLT.2013.2275179 10.1088/0957-0233/24/8/085204 10.1049/el:19820585 10.1109/JQE.1982.1071386 10.1364/OL.20.001447 |
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| Notes | 11-1959/O4 A phase-sensitive optical time domain reflectometer （φ-OTDR） based on a 120°-phase-difference Michelson in- terferometer is proposed. The Michelson interferometer with arm difference of 4m is used to test the phase difference between the Rayleigh scattering from two sections of the fiber. A new demodulation method called the inverse transmission matrix demodulation scheme is utilized to demodulate the distributed phase from the backward scattering along the long fiber, The experimental results show that the 120°-phase-difference inter- ferometer φ-OTDR can detect the phase along the 3km fiber, and the acoustic signal within the whole human hearing range of 20 Hz-20 kHz is reproduced accurately and quickly. Yu-Long Cao, Fei Yang, Dan Xu, Qing Ye, Hai-Wen Cai, Zu-aie Fang（1. Shanghai Key Laboratory of All Solid-state Laser and Applied Techniques, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800; 2. University of Chinese Academy of Sciences, Beijing 100049） |
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| References | 12 Lu Y L (3) 2010; 28 13 Masoudi A (9) 2013; 24 14 Hao Y Q (7) 2013; 22 1 2 4 5 6 8 Yang X D (11) 2013; 30 10 |
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| Snippet | A phase-sensitive optical time domain reflectometer （φ-OTDR） based on a 120°-phase-difference Michelson in- terferometer is proposed. The Michelson... |
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| SubjectTerms | OTDR 光时域反射仪 后向散射 瑞利散射 相位差 相敏 解调方法 迈克尔逊干涉仪 |
| Title | Phase-Sensitive Optical Time-Domain Reflectometer Based on a 120°-Phase-Difference Michelson Interferometer |
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