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Proceedings Paper

Enhanced sensitivity of gold modified tapered long period fiber grating for refractive index measurement
Author(s): Z. Taghipour; M. I. Zibaii; Z. Saeedian; M. H. Ghezelayagh; H. Latifi
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Paper Abstract

In this work, a novel approach to application of tapered long period fiber grating (TLPFG) sensor is demonstrated, which are based on the modification of gold nanoparticles (GNPs). The sensor we propose here is a TLPFG fabricated with CO2 laser by heat-pulling method. TLPFG was immobilized with GNP and its refractive index sensitivity was measured. Experimental results show that modification of the TLPFG with GNPs enhances the evanescent wave and penetration depth around the sensor. Comparing different resonance dips of gold modified and bare TLPFG, improvement of 10.3 and 6.6 times can be estimated for wavelength and intensity sensitivities, respectively.

Paper Details

Date Published: 17 October 2012
PDF: 4 pages
Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84213T (17 October 2012); doi: 10.1117/12.966398
Show Author Affiliations
Z. Taghipour, Shahid Beheshti Univ. (Iran, Islamic Republic of)
M. I. Zibaii, Shahid Beheshti Univ. (Iran, Islamic Republic of)
Z. Saeedian, Shahid Beheshti Univ. (Iran, Islamic Republic of)
M. H. Ghezelayagh, Shahid Beheshti Univ. (Iran, Islamic Republic of)
H. Latifi, Shahid Beheshti Univ. (Iran, Islamic Republic of)


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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