Journal
OPTICS COMMUNICATIONS
Volume 313, Issue -, Pages 94-98Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optcom.2013.10.015
Keywords
Surface plasmon resonance; Multi-hole fiber; Micro structured fiber; Refractive-index sensor
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Funding
- National Natural Science Foundation of China (NSFC) [U1231201, 61275094, 11104043, 61201083, 11274077]
- Special Foundation for Harbin Young Scientists [2013RFQXJ099, 2012RFLXG030]
- Fundamental Research Funds for the Central Universities
- 111 Project to the Harbin Engineering University [1313015]
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We propose a surface plasmon resonance (SPR) sensor based on a single mode optical fiber with six air holes. A thin gold film and a TiO2 film aiare deposited on the walls of an holes. Due to high refractive index of TiO2 the proposed sensor can operate at near-infrared (FR) wavelengths. The characteristics of the sensor were numerically investigated based on the finite-element method (FEM). The numerical results indicate that the optical loss spectrum of SPR sensor can be tuned easily by changing the thicknesses of gold and TiO2 layers. The refractive-index resolution of 2.7 x 10(-5) (sensitivity S approximate to 370/RIU) for aqueous analytes can be achieved. (c) 2013 Elsevier B.V. All rights reserved.
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