Optimization of modal sensitivity in nanowire SPR multimode sensor

• Type: Article in International Conference Proceedings Book
• Date: 2017

Authors

Santos, DF (Author) Other; Guerreiro, A (Author) FCUP; Baptista, JM (Author) Other

Conference proceedings International

Title: 2017 25TH INTERNATIONAL CONFERENCE ON OPTICAL FIBER SENSORS (OFS)

25th International Conference on Optical Fibre Sensors (OFS)

SOUTH KOREA, APR 24-28, 2017

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Other information

Authenticus ID: P-00M-T09

DOI: 10.1117/12.2264435

Abstract (EN): 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 1.87x10(-6) RIU were found.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 4