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

Author

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

Author_Institution

Dep. of Electrical Engineering, Feng Chia University, 100, Wenhwa Rd., Taichung, Taiwan, 40724

Volume

2009-Supplement

fYear

2009

fDate

2-6 Nov. 2009

Firstpage

1

Lastpage

6

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.

Keywords

Fiber gratings; Optical attenuators; Optical fiber polarization; Optical fiber sensors; Optical fibers; Optical losses; Optical refraction; Optical sensors; Refractive index; Wavelength measurement; Fiber optical sensors; liquid refractive index; long-period fiber grating; side-polished;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications and Photonics Conference and Exhibition (ACP), 2009 Asia

Conference_Location

Shanghai, China

Print_ISBN

978-1-55752-877-3

Electronic_ISBN

978-1-55752-877-3

Type

conf

Filename

5405168