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Highly sensitive photonic crystal fiber biosensor based on alternative plasmonic material
Author(s): Ahmed E. Khalil; Ahmed H. El-Saeed; Mohamed A. Farag; Mohamed E. Hashish; Mohammed Roshdi; Mohamed Farhat O. Hameed; Mohammad Y. Azab; Salah S. A. Obayya
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Paper Abstract

In this paper, we study the use of Titanium Nitride (TiN) as a new alternative plasmonic material to achieve a highly sensitive surface plasmon resonance (SPR) photonic crystal fiber (PCF) biosensor. The TiN has unique properties that make it an ideal material for nanofabrication, where TiN is highly stable, highly conductive, and corrosion resistant. Full vectorial finite element method is used with perfectly matched layer (PML) as boundary conditions to analyze the suggested biosensor. By analyzing the geometrical parameters of the proposed biosensor, a refractive index sensitivity of 7700 nm/RIU and 3600 nm/RIU are obtained for quasi-transverse electric (TE) and quasi transverse magnetic (TM) modes, respectively. The reported biosensor has a high linearity for detecting an unknown analyte refractive index ranging from 1.32 to 1.34. Further, fabrication of the proposed biosensor could be done using standard PCF fabrication current technologies.

Paper Details

Date Published: 4 May 2018
PDF: 7 pages
Proc. SPIE 10672, Nanophotonics VII, 106721D (4 May 2018); doi: 10.1117/12.2306300
Show Author Affiliations
Ahmed E. Khalil, Mansoura Univ. (Egypt)
Ahmed H. El-Saeed, Mansoura Univ. (Egypt)
Mohamed A. Farag, Mansoura Univ. (Egypt)
Mohamed E. Hashish, Mansoura Univ. (Egypt)
Mohammed Roshdi, Mansoura Univ. (Egypt)
Mohamed Farhat O. Hameed, Mansoura Univ. (Egypt)
Univ. of Science and Technology (Egypt)
Zewail City of Science and Technology (Egypt)
Mohammad Y. Azab, Mansoura Univ. (Egypt)
Salah S. A. Obayya, Mansoura Univ. (Egypt)
Zewail City of Science and Technology (Egypt)

Published in SPIE Proceedings Vol. 10672:
Nanophotonics VII
David L. Andrews; Angus J. Bain; Jean-Michel Nunzi; Andreas Ostendorf, Editor(s)

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