Open AccessTiO_2 nanoparticle thin film-coated optical fiber Fabry-Perot sensor
Author(s) -
Mingshun Jiang,
Qiu-Shun Li,
Junnan Wang,
Zhongwei Jin,
Qingmei Sui,
Yiwei Ma,
Jing Shi,
Faye Zhang,
Lei Jia,
Wenjiao Yao,
WenFei Dong
Publication year - 2013
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.003083
Subject(s) - materials science , thin film , refractive index , nanoparticle , optical fiber , fiber optic sensor , optics , deposition (geology) , fabry–pérot interferometer , optoelectronics , fiber , nanotechnology , wavelength , composite material , paleontology , physics , sediment , biology
In this paper, a novel TiO(2) nanoparticle thin film coated optical fiber Fabry-Perot (F-P) sensor had been developed for refractive index (RI) sensing by monitoring the shifts of the fringe contrast in the reflectance spectra. Using in situ liquid phase deposition approach, the TiO(2) nanoparticle thin film could be formed on the fiber surface in a controlled fashion. The optical properties of as-prepared F-P sensors were investigated both theoretically and experimentally. The results indicated that the RI sensitivity of F-P sensors could be effectively improved after the deposition of nanoparticle thin-films. It was about 69.38 dB/RIU, which was 2.6 times higher than that of uncoated one. The linear RI measurement range was also extended from 1.333~1.457 to 1.333~1.8423. More importantly, its optical properties exhibited the unique temperature-independent performance. Therefore, owing to these special optical properties, the TiO(2) nanoparticle thin film coated F-P sensors have great potentials in medical diagnostics, food quality testing, environmental monitoring, biohazard detection and homeland security, even at elevated temperature.