Brillouin optical time-domain reflectometry using up-conversion single-photon detector

OPTICS COMMUNICATIONS

卷:381

Article

Xia, Haiyun^1,2  Shangguan, Mingjia^3,4,5  Shentu, Guoliang^3,4,5  Wang, Chong¹  Qiu, Jiawei¹  Zheng, Mingyang⁶  Xie, Xiuping⁶  Dou, Xiankang¹  Zhang, Qiang^3,4,5  Pan, Jian-Wei^3,4,5 

[1] Univ Sci & Technol China, CAS Key Lab Geospace Environm, Hefei 230026, Anhui, Peoples R China

[2] Harbin Inst Technol, Collaborat Innovat Ctr Astronaut Sci & Technol, Harbin 150001, Peoples R China

[3] Univ Sci & Technol China, Shanghai Branch, Natl Lab Phys Sci Microscale, Shanghai 201315, Peoples R China

[4] Univ Sci & Technol China, Dept Modern Phys, Shanghai 201315, Peoples R China

[5] Univ Sci & Technol China, Synerget Innovat Ctr Quantum Informat & Quantum P, Hefei 230026, Anhui, Peoples R China

[6] Shandong Inst Quantum Sci & Technol Co Ltd, Jinan 250101, Shandong, Peoples R China

关键词: Brillouin optical time-domain reflectometry;    Up-conversion;    Single-photon detector;    Fabry-Perot interferometer;   

DOI  :  10.1016/j.optcom.2016.06.050

来源: Elsevier

【 摘 要 】

A direct-detection Brillouin optical time-domain reflectometry (BOTDR) using an up-conversion photon-counting detector and an all-fiber structure Fabry-Perot scanning interferometer is demonstrated with shot-noise limited performance. Taking advantage of ultra-low noise equivalent power of the up-conversion photon-counting detector and high spectral resolution of the interferometer, the Brillouin spectra along a polarization maintaining fiber (PMF) are analyzed in the optical frequency domain directly. In contrast with heterodyne BOTDR, photon-counting BOTDR has better EM compatibility and faster speed in data processing. In experiments, using peak input power of 20 dBm, temperature profile along a 9 km PMF is retrieved according to the Brillouin shifts, with spatial/temporal resolution of 2 m/15 s. The precision is 0.7 degrees C at the leading end and 1.2 degrees C at the trailing end. (C) 2016 Elsevier B.V. All rights reserved.

【 授权许可】

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