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Proceedings Paper

Mechanism of refractive index distribution measurement based on etched fiber Bragg grating
Author(s): Bin-bin Luo; Ming-fu Zhao; Xiao-jun Zhou; Sheng-hui Shi; Xi Han; Ying Wang
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Paper Abstract

We present the mechanism of refractive index (RI) distribution measurement based on an etched fiber Bragg grating (FBG) with a residual diameter of about 5.73 μm. The etched FBG is installed in a micro-tube where the RI of the liquid medium decreases linearly alone its axis. Experimental results show that the sensitivity of RI gradient and the average sensitivity of RI of this sensor is 336.2 nm·mm/RIU and 49.44 nm/RIU, respectively, when the RI ranging from 1.330 to 1.3586. The RI distribution of the inhomogeneous liquid medium can be obtained by the RI gradient sensitivity and the average RI sensitivity.

Paper Details

Date Published: 7 November 2012
PDF: 4 pages
Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84219O (7 November 2012); doi: 10.1117/12.974354
Show Author Affiliations
Bin-bin Luo, Chongqing Univ. of Technology (China)
Univ. of Electronic Science and Technology of China (China)
Ming-fu Zhao, Chongqing Univ. of Technology (China)
Xiao-jun Zhou, Univ. of Electronic Science and Technology of China (China)
Sheng-hui Shi, Univ. of Electronic Science and Technology of China (China)
Xi Han, Chongqing Univ. of Technology (China)
Ying Wang, Chongqing Univ. of Technology (China)


Published in SPIE Proceedings Vol. 8421:
OFS2012 22nd International Conference on Optical Fiber Sensors
Yanbiao Liao; Wei Jin; David D. Sampson; Ryozo Yamauchi; Youngjoo Chung; Kentaro Nakamura; Yunjiang Rao, Editor(s)

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