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Proceedings Paper

Sensitivity enhancement of a surface plasmon resonance based tapered fiber optic sensor using a high index dielectric layer
Author(s): Priya Bhatia; B. D. Gupta
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Paper Abstract

Surface plasmon resonance based tapered fiber optic refractive index sensor incorporating an additional high index dielectric layer between metal and sensing medium using wavelength interrogation method is analyzed. The simulation is carried out for gold and silver metals. The simulation predicts, for a given taper ratio, the increase in the sensitivity of the sensor with increase in the thickness of the dielectric layer. The sensitivity also increases with the increase in the taper ratio. The advantages of additional layer of dielectric, in addition to the increase in sensitivity, are the protection of metallic layer from oxidation and the tuning of wavelength range of operation of the sensor.

Paper Details

Date Published: 23 August 2011
PDF: 9 pages
Proc. SPIE 8173, Photonics 2010: Tenth International Conference on Fiber Optics and Photonics, 81731T (23 August 2011); doi: 10.1117/12.897798
Show Author Affiliations
Priya Bhatia, Indian Institute of Technology Delhi (India)
B. D. Gupta, Indian Institute of Technology Delhi (India)


Published in SPIE Proceedings Vol. 8173:
Photonics 2010: Tenth International Conference on Fiber Optics and Photonics
Sunil K. Khijwania; Banshi D. Gupta; Bishnu P. Pal; Anurag Sharma, Editor(s)

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