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Proceedings Paper

Enhanced RI sensor using a combination of a long period fiber grating and a small core singlemode fiber (SCSMF) structure
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Paper Abstract

An enhanced refractive index (RI) sensor with combination of long period fiber grating (LPG) and a small core singlemode fiber (SCSMF) structure is proposed and developed. Since the LPG and SCSMF transmission spectra experience a blue and red shift respectively as the surrounding RI (SRI) increases, the sensitivity is improved by measuring the separation between the resonant wavelengths of the LPG and SCSMF structures. Experimental results show that the sensor has a sensitivity of 1028 nm/SRI unit in the SRI range from 1.422 to 1.429, which is higher than individual sensitivities of either structure alone used in the experiment.

Paper Details

Date Published: 7 November 2012
PDF: 4 pages
Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 842166 (7 November 2012); doi: 10.1117/12.971207
Show Author Affiliations
Qiang Wu, Dublin Institute of Technology (Ireland)
Youqiao Ma, Dublin Institute of Technology (Ireland)
Yuliya Semenova, Dublin Institute of Technology (Ireland)
Pengfei Wang, Dublin Institute of Technology (Ireland)
H. P. Chan, City Univ. of Hong Kong (Hong Kong, China)
Gerald Farrell, Dublin Institute of Technology (Ireland)


Published in SPIE Proceedings Vol. 8421:
OFS2012 22nd International Conference on Optical Fiber Sensors
Yanbiao Liao; Wei Jin; David D. Sampson; Ryozo Yamauchi; Youngjoo Chung; Kentaro Nakamura; Yunjiang Rao, Editor(s)

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