Design of a surface plasmon resonance refractive index sensor with high sensitivity

Md. Rabiul Hasan; Sanjida Akter; M. Saifur Rahman; Kawsar Ahmed

doi:10.1117/1.OE.56.8.087101

17 August 2017 Design of a surface plasmon resonance refractive index sensor with high sensitivity

Md. Rabiul Hasan, Sanjida Akter, M. Saifur Rahman, Kawsar Ahmed

Author Affiliations +

Optical Engineering, Vol. 56, Issue 8, 087101 (August 2017). https://doi.org/10.1117/1.OE.56.8.087101

Abstract

This paper presents a highly sensitive photonic crystal fiber (PCF) refractive index sensor based on the surface plasmon resonance (SPR) effect operating in the telecommunication wavelengths. Gold is used as the plasmonic material due to its chemical stability and titanium dioxide (TiO2) is used to shift the resonance wavelength in the telecommunication bands. Both materials are deposited sequentially on the PCF surface, which is comparatively easy to fabricate. Numerical investigations show that the proposed sensor exhibits very high wavelength sensitivity of 10,800 nm/RIU and amplitude sensitivity of 514 RIU−1 in the sensing range between 1.46 and 1.48. Moreover, it exhibits maximum sensor resolution of 9.25×10−6 RIU and high linearity over a wide sensing range. The proposed sensor can be practically realized due to its simple and straightforward structure.

Citation Download Citation

Md. Rabiul Hasan, Sanjida Akter, M. Saifur Rahman, and Kawsar Ahmed "Design of a surface plasmon resonance refractive index sensor with high sensitivity," Optical Engineering 56(8), 087101 (17 August 2017). https://doi.org/10.1117/1.OE.56.8.087101

Received: 2 April 2017; Accepted: 12 July 2017; Published: 17 August 2017

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