Highly sensitive photonic crystal fiber biosensor based on alternative plasmonic material
作者： Salah S.A. Obayya , Ahmed E. Khalil , Ahmed H. El-Saeed , Mohamed A. Farag , Mohamed Farhat O. Hameed
DOI: 10.1117/12.2306300
关键词:
摘要: In this paper, we study the use of Titanium Nitride (TiN) as a new alternative plasmonic material to achieve highly sensitive surface plasmon resonance (SPR) photonic crystal fiber (PCF) biosensor. The TiN has unique properties that make it an ideal for nanofabrication, where is stable, conductive, and corrosion resistant. Full vectorial finite element method used with perfectly matched layer (PML) boundary conditions analyze suggested By analyzing geometrical parameters proposed biosensor, refractive index sensitivity 7700 nm/RIU 3600 are obtained quasi-transverse electric (TE) quasi transverse magnetic (TM) modes, respectively. reported biosensor high linearity detecting unknown analyte ranging from 1.32 1.34. Further, fabrication could be done using standard PCF current technologies.
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