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Proceedings Paper

Double-sided polishing long period fiber grating sensors for measuring liquid refractive index
Author(s): Chuen-Lin Tien; Tsai-Wei Lin; Hung-Yi Hsu; Li-Chieh Chen; Yu-Chung Chen; Wen-Feng Liu
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Paper Abstract

A new liquid refractive index sensor using double-sided polishing long-period fiber gratings (DSP-LPFG) is presented. The influence of residual cladding thickness on the sensitivity of measuring liquid refractive index is investigated. The proposed sensor response to external liquid refractive indices varying in the range of n=1.330 - 1.375 has been carried out by measuring the transmission wavelength changes. Experimental results show that well-controlled polishing parameters can significantly increase the sensitivity. The sensitivity of -143.396 nm/RIU can be obtained in this study.

Paper Details

Date Published: 25 November 2009
PDF: 6 pages
Proc. SPIE 7634, Optical Sensors and Biophotonics, 76341A (25 November 2009); doi: 10.1117/12.851849
Show Author Affiliations
Chuen-Lin Tien, Feng Chia Univ. (Taiwan)
Tsai-Wei Lin, Chung Hua Univ. (Taiwan)
Hung-Yi Hsu, Feng Chia Univ. (Taiwan)
Li-Chieh Chen, Feng Chia Univ. (Taiwan)
Yu-Chung Chen, Feng Chia Univ. (Taiwan)
Wen-Feng Liu, Feng Chia Univ. (Taiwan)


Published in SPIE Proceedings Vol. 7634:
Optical Sensors and Biophotonics
Xingde Li; Qingming Luo; Vasilis Ntziachristos; Yoshiaki Yasuno, Editor(s)

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