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Chin. Opt. Lett.
 Home  List of Issues    Issue 12 , Vol. 15 , 2017    10.3788/COL201715.120603


Pulse reference-based compensation technique for intensity-modulated optical fiber sensors
Qiang Bian1;2, Zhangqi Song1, Yuzhong Chen1, and Xueliang Zhang1
1 Academy of Ocean Science and Engineering, [National University of Defense Technology], Changsha 41 0073, China
2 College of Optoelectronics Science and Engineering, [National University of Defense Technology], Changsha 410073, China

Chin. Opt. Lett., 2017, 15(12): pp.120603

DOI:10.3788/COL201715.120603
Topic:Fiber optics and optical communication
Keywords(OCIS Code): 060.2370  060.4080  280.6780  

Abstract
We propose a compensation technique based on pulse reference for intensity-modulated optical fiber sensors that can compensate the power fluctuation of the light source, the change of optical components transmission loss, and the coupler splitting ratio. The theoretical principle of this compensation technique is analyzed and a temperature sensor based on fiber coating-covered optical microfiber is carried out to demonstrate the compensation effect. The system noise is measured to be 0.0005 dB with the temperature sensitivity reaching ?0.063 dB/°C, and the output drift is 0.006 dB in 2 h at room temperature. The output shows a slight variation (0.0061 dB) when the light source and the common light path suffer a 3 dB attenuation fluctuation.

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:2017/9/20
Accepted:2017/11/1
Posted online:2017/11/20

Get Citation: Qiang Bian, Zhangqi Song, Yuzhong Chen, and Xueliang Zhang, "Pulse reference-based compensation technique for intensity-modulated optical fiber sensors," Chin. Opt. Lett. 15(12), 120603(2017)

Note: This work was supported by the National Natural Science Foundation of China (Nos. 61505258 and 11574397) and the Scientific Research Project of the National University of Defense Technology (No. JC15-11-02).



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