Optical fiber refractive sensors enhanced by 2D hydrogen doped molybdenum oxide nanodisks

Tianshu Li; Lianqing Zhu; Liandong Yu

doi:10.1117/12.2606562

24 November 2021 Optical fiber refractive sensors enhanced by 2D hydrogen doped molybdenum oxide nanodisks

Tianshu Li, Lianqing Zhu, Liandong Yu

Proceedings Volume 12065, AOPC 2021: Optical Sensing and Imaging Technology; 120652I (2021) https://doi.org/10.1117/12.2606562
Event: Applied Optics and Photonics China 2021, 2021, Beijing, China

Abstract

This paper has fabricated and characterized a bilayer SPR optical fiber sensor, enabled by hydrogen doped molybdenum oxide (HMO) nanodisks coated on the metal film's surface. Doped molybdenum oxide with ultra-doping and large permittivity properties can tune the plasmonic absorption in a visible region. The materials were synthesized by hydrothermal method, characterized by the atomic force microscope, Raman spectroscopy, and other analytical instruments. The electrical and optical properties of the materials are calculated and analyzed with density functional theory (DFT). The sensor measured the refractive index of a liquid solution, and a sensitivity of 2565 nm/RIU was achieved, which was approximately 1.4 times higher than that of a conventional SPR sensor without modification HMO nanodisks.

Citation Download Citation

Tianshu Li, Lianqing Zhu, and Liandong Yu "Optical fiber refractive sensors enhanced by 2D hydrogen doped molybdenum oxide nanodisks", Proc. SPIE 12065, AOPC 2021: Optical Sensing and Imaging Technology, 120652I (24 November 2021); https://doi.org/10.1117/12.2606562

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