D-shape optical fiber SPR sensor with reference channel compensation

Peng Ding; Anbo Guo; Wancong Zhao; Xianglong Zeng

doi:10.1117/12.2691248

16 October 2023 D-shape optical fiber SPR sensor with reference channel compensation

Peng Ding, Anbo Guo, Wancong Zhao, Xianglong Zeng

Proceedings Volume 12792, Eighteenth National Conference on Laser Technology and Optoelectronics; 127921A (2023) https://doi.org/10.1117/12.2691248
Event: Eighteenth National Conference on Laser Technology and Optoelectronics, 2023, Shanghai, China

Abstract

In this paper, we prepared side-polished optical fiber surface plasmon resonance (SPR) sensors, which are embedded in V-groove in quartz glass and are spattered with ~5 nm Cr and ~50 nm Au. The response performance of 50 μm SPR optical fiber sensor to the refractive index matching fluid was tested experimentally. When the refractive index range is 1.335 ~ 1.345, the full width at half maximum (FWHM) of resonant dip is 68 nm, and the sensitivity is 1370 nm/RIU. The surface plasmon wave (SPW) is excited by a broadband light source and a fixed wavelength laser source, and the corresponding detection methods are respectively maximum absorption wavelength detection, and fixed wavelength power absorption detection. The maximum absorption wavelength detection sensitivity is 2000 nm/RIU, and the resolution is 5 × 10^-6 RIU. The power absorption ratio detection method can realize resolution 3.5 × 10^-4 RIU.

Citation Download Citation

Peng Ding, Anbo Guo, Wancong Zhao, and Xianglong Zeng "D-shape optical fiber SPR sensor with reference channel compensation", Proc. SPIE 12792, Eighteenth National Conference on Laser Technology and Optoelectronics, 127921A (16 October 2023); https://doi.org/10.1117/12.2691248

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