Periodic array of nanoholes on gold-coated optical fiber end-faces for surface plasmon resonance liquid refractive index sensing

Huy Nguyen; Fotios Sidiroglou; Stephen F. Collins; Gregory W. Baxter; Ann Roberts; Timothy J. Davis

doi:10.1117/12.915938

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30 January 2012 Periodic array of nanoholes on gold-coated optical fiber end-faces for surface plasmon resonance liquid refractive index sensing

Huy Nguyen, Fotios Sidiroglou, Stephen F. Collins, Gregory W. Baxter, Ann Roberts, Timothy J. Davis

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Proceedings Volume 8351, Third Asia Pacific Optical Sensors Conference; 835128 (2012) https://doi.org/10.1117/12.915938
Event: Asia Pacific Optical Sensors Conference, 2012, Sydney, Australia

Abstract

Focused ion beam (FIB) lithography was used to inscribe a periodic array of nanoholes directly on gold-coated optical fiber end-faces. The excitation of the surface plasmon polaritons of the nanohole arrays on the optical fiber end-faces provided the basis of a refractive index sensor for liquids. This optical fiber based surface plasmon resonance sensor is compact and has the potential to be used in biomedical applications. A sensitivity of approximately 294 nm per refractive index unit (RIU) has been demonstrated for this sensor.

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Huy Nguyen, Fotios Sidiroglou, Stephen F. Collins, Gregory W. Baxter, Ann Roberts, and Timothy J. Davis "Periodic array of nanoholes on gold-coated optical fiber end-faces for surface plasmon resonance liquid refractive index sensing", Proc. SPIE 8351, Third Asia Pacific Optical Sensors Conference, 835128 (30 January 2012); https://doi.org/10.1117/12.915938

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