SPR sensing with bimetallic layers in optical fibers and phase interrogation

H. Moayyed; I. T. Leite; L. Coelho; J. L. Santos; D. Viegas

doi:10.1117/12.2027614

18 November 2013 SPR sensing with bimetallic layers in optical fibers and phase interrogation

H. Moayyed, I. T. Leite, L. Coelho, J. L. Santos, D. Viegas

Proceedings Volume 8785, 8th Iberoamerican Optics Meeting and 11th Latin American Meeting on Optics, Lasers, and Applications; 8785FK (2013) https://doi.org/10.1117/12.2027614
Event: 8th Ibero American Optics Meeting/11th Latin American Meeting on Optics, Lasers, and Applications, 2013, Porto, Portugal

Abstract

An analytical model based on geometrical optics and multilayer transfer matrix method is applied to determine the sensing properties of tapered optical fiber based SPR sensors incorporating bimetallic (Gold and Silver) layers, particularly when phase interrogation is considered. Phase interrogation is studied as a methodology to attain enhanced sensitivities. The performance of the sensing heads as function of the bimetallic layers and taper parameters is analyzed. It is shown the bimetallic combination is capable to provide larger values of sensitivity compared with the single layer approach. The results derived from this study are guiding the experimental study of these structures.

Citation Download Citation

H. Moayyed, I. T. Leite, L. Coelho, J. L. Santos, and D. Viegas "SPR sensing with bimetallic layers in optical fibers and phase interrogation", Proc. SPIE 8785, 8th Iberoamerican Optics Meeting and 11th Latin American Meeting on Optics, Lasers, and Applications, 8785FK (18 November 2013); https://doi.org/10.1117/12.2027614

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