Double-sided polishing long period fiber grating sensors for measuring liquid refractive index

Chuen-Lin Tien; Tsai-Wei Lin; Hung-Yi Hsu; Li-Chieh Chen; Yu-Chung Chen; Wen-Feng Liu

doi:10.1117/12.851849

25 November 2009 Double-sided polishing long period fiber grating sensors for measuring liquid refractive index

Chuen-Lin Tien, Tsai-Wei Lin, Hung-Yi Hsu, Li-Chieh Chen, Yu-Chung Chen, Wen-Feng Liu

Proceedings Volume 7634, Optical Sensors and Biophotonics; 76341A (2009) https://doi.org/10.1117/12.851849
Event: Asia Communications and Photonics, 2009, Shanghai, Shanghai , China

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.

Citation Download Citation

Chuen-Lin Tien, Tsai-Wei Lin, Hung-Yi Hsu, Li-Chieh Chen, Yu-Chung Chen, and Wen-Feng Liu "Double-sided polishing long period fiber grating sensors for measuring liquid refractive index", Proc. SPIE 7634, Optical Sensors and Biophotonics, 76341A (25 November 2009); https://doi.org/10.1117/12.851849

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