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Chin. Opt. Lett.
 Home  List of Issues    Issue 12 , Vol. 15 , 2017    10.3788/COL201715.120601


Performance enhancement of Brillouin optical correlation domain analysis based on frequency chirp magnification
Bin Wang, Xinyu Fan, Jiangbing Du, and Zuyuan He
State Key Laboratory of Advanced Optical Communication Systems and Networks, [Shanghai Jiao Tong University], Shanghai 200240, China

Chin. Opt. Lett., 2017, 15(12): pp.120601

DOI:10.3788/COL201715.120601
Topic:Fiber optics and optical communication
Keywords(OCIS Code): 060.2370  290.5900  190.4380  

Abstract
We propose a method to enhance the performance of Brillouin optical correlation domain analysis (BOCDA) with a broad chirp span of optical sources based on the frequency chirp magnification technique. In BOCDA systems, the number of effective sensing points is proportional to the chirp span of the light source, which is normally limited by the characteristics of the laser diode. We demonstrate a chirp span of 126 GHz with the proposed method, to double the effective sensing points of BOCDA. By combining with differential measurement schemes, a spatial resolution of <10 cm over a 1 km range is achieved.

Copyright: © 2003-2012 . This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Received:2017/7/17
Accepted:2017/9/22
Posted online:2017/11/2

Get Citation: Bin Wang, Xinyu Fan, Jiangbing Du, and Zuyuan He, "Performance enhancement of Brillouin optical correlation domain analysis based on frequency chirp magnification," Chin. Opt. Lett. 15(12), 120601(2017)

Note: The work was supported by the National Key R&D Program of China under Grant No. 2017YFB0405500.



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