23 April 2017 Optimization of modal sensitivity in nanowire SPR multimode sensor
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Proceedings Volume 10323, 25th International Conference on Optical Fiber Sensors; 1032330 (2017) https://doi.org/10.1117/12.2264435
Event: 25th International Conference on Optical Fiber Sensors, 2017, Jeju, Korea, Republic of
Abstract
This paper presents a multimode fiber sensor that uses surface plasmon resonance on a metallic wire to measure refractive index. Numerical simulations based on the finite element method reveal the sensor supports several plasmon modes in the wire capable of coupling with the multiples optical fiber modes. Therefore, the sensor configuration creates multiple resonances at different wavelengths, with different values of the loss, sensitivity, among other parameters. Choosing the appropriate mode and filtering out the rest of the modes allows to optimize the sensor performance. In the present work a sensitivity of 5340nm/RIU and resolution of 1.87×10-6RIU were found.
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D. F. Santos, D. F. Santos, A. Guerreiro, A. Guerreiro, J. M. Baptista, J. M. Baptista, } "Optimization of modal sensitivity in nanowire SPR multimode sensor", Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 1032330 (23 April 2017); doi: 10.1117/12.2264435; https://doi.org/10.1117/12.2264435
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