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Modal Filtering for Optimized Surface Plasmon Resonance Sensing in Multimode Plastic Optical Fibers

2015; IEEE Sensors Council; Volume: 15; Issue: 11 Linguagem: Inglês

10.1109/jsen.2015.2450991

1558-1748

Nunzio Cennamo, L. Coelho, D F N Santos, J. M. Baptista, Ariel Guerreiro, P. A. S. Jorge, Luigi Zeni,

Plasmonic and Surface Plasmon Research

In this paper, we present the numerical and the experimental results of a new low cost surface plasmon resonance sensor configuration. It is based on a plasmonic sensor platform and an efficient higher order modes filtering in plastic multimode fibers, exploiting a tapered plastic optical fiber at the output of the sensor system. The experimental results have demonstrated that the tapered filter positioned after the sensor system improves the performances in terms of refractive index range and depth of the resonance curve. The results are in agreement with the numerical simulations.