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Refractive index sensor based on helical long period grating based on dual-hole elliptical core fiber
Author(s): Chao Liu; Yu Zhang; Zhihai Liu; Yaxun Zhang
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Paper Abstract

In this paper, the fabrication of a novel refractive index sensor based on helical long period grating (HLPG) written in a dual-hole elliptical core fiber (DHECF) was demonstrated and the sensing characteristic was experimentally investigated. Due to the structure of the DHECF, The proposed HLPG sensor could work with ultra-small dose testing samples. In addition, since the sample is isolated from the external environment, the testing is immunity to the external interference. The experimental results showed that the testing sensitivity of the sensor was 194nm/RIU with the refractive index range of 1.333 to 1.385. The proposed structure will have a good practicability in the microfluidic sensing system.

Paper Details

Date Published: 23 April 2017
PDF: 4 pages
Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103235J (23 April 2017); doi: 10.1117/12.2267548
Show Author Affiliations
Chao Liu, Harbin Engineering Univ. (China)
Yu Zhang, Harbin Engineering Univ. (China)
Zhihai Liu, Harbin Engineering Univ. (China)
Yaxun Zhang, Harbin Engineering Univ. (China)


Published in SPIE Proceedings Vol. 10323:
25th International Conference on Optical Fiber Sensors
Youngjoo Chung; Wei Jin; Byoungho Lee; John Canning; Kentaro Nakamura; Libo Yuan, Editor(s)

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