Optoelectrode based on conductive fiber Fabry-Perot probe for simultaneous electrochemical and optical sensing

Chang, Xinyu; Wen, Xingyue; Gao, Danheng; Luo, Meng; Teng, Pingping; Zhu, Zheng; Zhang, Jianzhong; Li, Kang; Copner, Nigel; Yang, Xinghua

doi:10.1016/j.measurement.2022.112198

Cited by 3 publications

(1 citation statement)

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“…These advancements enable the recording of new geoscientific information with high temporal and spatial resolutions and improved accuracy. Consequently, optical fiber technologies have become increasing popular in recent years for geophysics and geoscientific applications (Wassermann et al, 2016;Matias et al, 2017;Bastianini et al, 2019;Lu et al, 2019;Zhan, 2019;Lindsey and Martin, 2021;Chang et al, 2022;Moreno et al, 2022;Noe et al, 2023). Below, we summarize the three main approaches to fiber optic sensing: light transmission sensing, point sensing and distributed sensing.…”

Section: Introductionmentioning

confidence: 99%

Fiber optic sensing for volcano monitoring and imaging volcanic processes

Jousset,

Currenti,

Murphy

et al. 2024

Preprint

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This chapter describes fiber optic sensing methodologies and their applications for understanding volcanic structure and processes. We assess their benefits for volcano monitoring and offer possible solutions to address their challenges. The physical principles at the basis of fiber optic sensing technologies have been known for several decades. These principles are related to various processes involving electro-magnetic interactions of light sent by a laser within glass. Intrinsic physical properties of glass within the optical fiber, when engineered appropriately and interrogated with an adequate light source, enable us to access a number of environmental parameters, such as temperature, strain and rotation over a large frequency range. However, only recently developed instruments have been able to sense these parameters efficiently, either at a point or densely in a distributed way for geophysical and volcanological applications. Rotational sensors allow us to measure the rotational components of the seismic wave field, which have been discarded in the past. Distributed fiber optic sensing provides access to quasi-continuous measurements of temperature, strain and strain rate along km-long fibers with a high spatial resolution (meter) and sampling rate (kHz). We show examples on volcanoes both on land and in submarine environments. We demonstrate that data from optical strainmeters, rotational sensors, distributed fiber optic strain and/or temperature sensing can reveal unknown structural features and processes in volcanoes. These examples testify that fiber optic sensing methodologies owe to be implemented as additional tools for improved volcano monitoring and for volcanic crisis management.

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Section: Introductionmentioning

confidence: 99%

Fiber optic sensing for volcano monitoring and imaging volcanic processes

Jousset,

Currenti,

Murphy

et al. 2024

Preprint

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Expansion of measurement range: Tolerance analysis and application of the two-peak method for optical sensors with a few spectral peaks

et al. 2023

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A tunable extrinsic Fabry-Pérot interferometer membrane for sensitivity enhancement

Wen,

Yang,

Zheng

et al. 2023

AOPC 2023: Optic Fiber Gyro

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In this work, a novel tunable diaphragm structures are designed as sensing diaphragms for ultrasonic sensors. The natural frequency and sensitivity of the new structure diaphragms is simulated by finite element method. The proposed membrane structures is outer-ring clover (ORC) structure. Typically, an increase in membrane sensitivity is accompanied by a decrease in its natural frequency. However, this can be significantly mitigated by the proposed structures, which can exhibit notable structural optimization effects by simultaneously enhancing sensitivity and minimizing the reduction of the natural frequency. The simulation results indicate that, when the outer diameter and thickness remain unchanged, the sensor can achieve a maximum sensitivity improvement of 3.5 times and a reduction of 1.25 times in the natural frequency compared to the circular diaphragms (CD). Furthermore, ORC can be fabricated by micro-electromechanical systems (MEMS) technology, making it feasible for practical manufacturing and production. The sensing membrane is expected to be applicable in detection fields such as ultrasound partial discharge and underwater acoustics.

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Optoelectrode based on conductive fiber Fabry-Perot probe for simultaneous electrochemical and optical sensing

Cited by 3 publications

References 46 publications

Fiber optic sensing for volcano monitoring and imaging volcanic processes

Fiber optic sensing for volcano monitoring and imaging volcanic processes

Expansion of measurement range: Tolerance analysis and application of the two-peak method for optical sensors with a few spectral peaks

A tunable extrinsic Fabry-Pérot interferometer membrane for sensitivity enhancement

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