Dual-wavelength intensity-modulated Fabry–Perot refractive index sensor driven by temperature fluctuation

Abstract We experimentally and theoretically investigate Fano-like resonance in large-area Au/SiO2/Au nano-patches meta-structure, which is originating from the coupling between Fabry Perot resonance and magnetic dipole resonance modes. A highly sensitive refractive index sensor based on the lineshape analysis is obtained. The extracted wavelength shift with the amount of substance of Hg2+ changing from 10-3 pmol to 1 nmol has a linear dependence, and the sensitivity can reach to ultra-low limit of detection (LOD) as 10-3 pmol. This study may provide an approach for the development and modification in sensing.

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Wavelength-Interrogation Fabry–Perot Refractive Index Sensor Based on a Sealed In-Fiber Cavity

IEEE Photonics Technology Letters ◽

10.1109/lpt.2015.2478797 ◽

2016 ◽

Vol 28 (1) ◽

pp. 3-6 ◽

Cited By ~ 9

Author(s):

Tingting Wang ◽

Yixian Ge ◽

Jianhua Chang ◽

Ming Wang

Keyword(s):

Refractive Index ◽

Refractive Index Sensor ◽

Fabry Perot

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Optical fiber Fabry-Perot interferometer refractive index sensor based on Vernier effect for silica colloidal sol aging monitoring

Optical Fiber Technology ◽

10.1016/j.yofte.2020.102338 ◽

2020 ◽

Vol 60 ◽

pp. 102338 ◽

Cited By ~ 1

Author(s):

Lin Huang ◽

Guorui Zhou ◽

Lianghong Yan ◽

Hongwei Yan ◽

Xiaodong Jiang

Keyword(s):

Refractive Index ◽

Optical Fiber ◽

Refractive Index Sensor ◽

Fabry Perot ◽

Vernier Effect

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Preparation and Characterization of Microsphere ZnO ALD Coating Dedicated for the Fiber-Optic Refractive Index Sensor

Nanomaterials ◽

10.3390/nano9020306 ◽

2019 ◽

Vol 9 (2) ◽

pp. 306 ◽

Cited By ~ 7

Author(s):

Paulina Listewnik ◽

Marzena Hirsch ◽

Przemysław Struk ◽

Matthieu Weber ◽

Mikhael Bechelany ◽

...

Keyword(s):

Refractive Index ◽

Optical Fiber ◽

Fiber Optic ◽

Single Mode ◽

Atomic Layer ◽

Fiber Optic Sensor ◽

Refractive Index Sensor ◽

Layer Deposition ◽

Fabry Perot

We report the fabrication of a novel fiber-optic sensor device, based on the use of a microsphere conformally coated with a thin layer of zinc oxide (ZnO) by atomic layer deposition (ALD), and its use as a refractive index sensor. The microsphere was prepared on the tip of a single-mode optical fiber, on which a conformal ZnO thin film of 200 nm was deposited using an ALD process based on diethyl zinc (DEZ) and water at 100 °C. The modified fiber-optic microsphere was examined using scanning electron microscopy and Raman spectroscopy. Theoretical modeling has been carried out to assess the structure performance, and the performed experimental measurements carried out confirmed the enhanced sensing abilities when the microsphere was coated with a ZnO layer. The fabricated refractive index sensor was operating in a reflective mode of a Fabry–Pérot configuration, using a low coherent measurement system. The application of the ALD ZnO coating enabled for a better measurement of the refractive index of samples in the range of the refractive index allowed by the optical fiber. The proof-of-concept results presented in this work open prospects for the sensing community and will promote the use of fiber-optic sensing technologies.

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