Title :
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
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;
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
