In-Fiber Collimator-Based Fabry-Perot Interferometer with Enhanced Vibration Sensitivity

Du, Bin; Xu, Xizhen; He, Jun; Guo, Kuikui; Huang, Wei; Zhang, Fengchan; Zhang, Min; Wang, Yiping

doi:10.3390/s19020435

Cited by 21 publications

(12 citation statements)

References 29 publications

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“…Other researchers have attempted the fabrication of microcantilevers using organic-based materials such as SU-8 and Polydimethylsiloxane (PDMS) [ 53 , 196 ] because of their low modulus of elasticity and versatile and simple processing procedures. By using the bottom-up approaches, the microfabrication process of the SU-8 microcantilevers has a high output.…”

Section: Fabrication Modification and Functionalization Of Afm Mmentioning

confidence: 99%

Review: Cantilever-Based Sensors for High Speed Atomic Force Microscopy

Alunda¹,

Lee

2020

Sensors

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This review critically summarizes the recent advances of the microcantilever-based force sensors for atomic force microscope (AFM) applications. They are one the most common mechanical spring–mass systems and are extremely sensitive to changes in the resonant frequency, thus finding numerous applications especially for molecular sensing. Specifically, we comment on the latest progress in research on the deflection detection systems, fabrication, coating and functionalization of the microcantilevers and their application as bio- and chemical sensors. A trend on the recent breakthroughs on the study of biological samples using high-speed atomic force microscope is also reported in this review.

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Section: Fabrication Modification and Functionalization Of Afm Mmentioning

confidence: 99%

Review: Cantilever-Based Sensors for High Speed Atomic Force Microscopy

Alunda¹,

Lee

2020

Sensors

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“…The fiber optic vibration sensors are mainly based on fiber Bragg gratings (FBGs), Mach-Zehnder interferometers, or Fabry-Perot (FP) interferometers. Of these, the FP interferometer can be easily formed in small structures, and it has the advantages of stability and is easy to be demodulated [12][13][14][15][16]. Meanwhile, among the fiber optic vibration sensors, the in-line fiber optic vibration sensor is particularly small, can be embedded in the structure for detection, and has the prospect of multi-point distributed measurement and combination with other types of sensors.…”

Section: Introductionmentioning

confidence: 99%

An In-Line Fiber Optic Fabry–Perot Sensor for High-Temperature Vibration Measurement

et al. 2020

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An in-line fiber optic Fabry–Perot (FP) sensor for high-temperature vibration measurement is proposed and experimentally demonstrated in this paper. We constructed an FP cavity and a mass on single-mode fibers (SMFs) by fusion, and together they were inserted into a hollow silica glass tube (HST) to form a vibration sensor. The radial dimension of the sensor was less than 500 μm. With its all-silica structure, the sensor has the prospect of measuring vibration in high-temperature environments. In our test, the sensor had a resonance frequency of 165 Hz. The voltage sensitivity of the sensor system was about 11.57 mV/g and the nonlinearity was about 2.06%. The sensor could work normally when the temperature was below 500 °C, and the drift of the phase offset point with temperature was 0.84 pm/°C.

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“…With the rapid development of the whole power industry, the highly automated and intelligent requirements of the current measurement system and the electrical appliances protection system are constantly increasing, therefore, the measurement of large currents has become an urgent problem to be solved [1,2,3,4,5,6,7,8,9,10,11,12,13]. For a long time, the current measurement of the high-voltage power grids has been done by using a traditional electromagnetic current sensor [11,12,13], but the traditional electromagnetic current sensor has various shortcomings, for example, magnetic saturation, ferromagnetic resonance, narrow frequency band, small dynamic range, oil flammability and explosivity, etc.…”

Section: Introductionmentioning

confidence: 99%

“…In the past decade, the research in the field of improving the sensitivity of the fiber grating current sensor has made some progress [1,2,3,4,5,6,7,8,9,10,11,12]. Generally speaking, there are two ways to improve the sensitivity: one is to improve the demodulation system of the fiber grating current sensor.…”

Section: Introductionmentioning

confidence: 99%

“…Among them, the interference demodulation method has higher sensitivity [11], but it has a very complicated structure and is susceptible to the external environment, and at the same time, the stability of the system is poor [10,11,12,13]. For the sideband demodulation method [11], the most commonly used demodulation system composed of the tuned Fabry-Perot etalon is very complicated, and the repeatability of the wavelength and driving voltage corresponding to the adjustable Fabry-Perot cavity is poor, only for static measurement [3,7,8,9,10]. The matched demodulation method has also high sensitivity [7,8,9,10,11,12], but it has a narrow dynamic range and is susceptible to the external environment, at the same time, the cost of CWDM and AWG is very high as well [11].…”

Section: Introductionmentioning

confidence: 99%

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A Sensitivity-enhanced Fiber Grating Current Sensor Based on Giant Magnetostrictive Material for Large-Current Measurement

Wang

Wan

Zhao

et al. 2019

Sensors

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Currently, in the modern power industry, it is still a great challenge to achieve high sensitivity and uninterrupted-online measurement of large current on the high voltage gridlines. At present, the fiber grating current sensors based on giant magnetostrictive material used in the modern power industry to achieve uninterrupted-online measurement of large currents on high voltage grid lines is a better method, but the sensitivity of this current sensor is relatively low, therefore, it is key to improve the sensitivity of this current sensor. Here we show a sensitivity-enhanced fiber grating current sensor based on giant magnetostrictive material (in the following, simply referred to as the sensitivity-enhanced fiber grating current sensor) that is able to achieve high sensitivity and uninterrupted-online measurement of large currents by means of pressurizing the giant magnetostrictive material. Sampling the power frequency sinusoidal alternating current signals with the amplitudes of 107, 157 and 262 A respectively, based on realistic factors, for the sensitivity-enhanced current sensor, the sensitivities, compared with that of the traditional fiber grating current sensor based on giant magnetostrictive material (in the following, simply referred to as the traditional fiber grating current sensor), were respectively enhanced by 268.96%, 135.72% and 71.57%. Thus the sensitivity-enhanced fiber grating current sensor allows us to solve the issue of high sensitivity and uninterrupted-online measurement of large currents that have been plaguing the power industry in a very simple and low-cost way.

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In-Fiber Collimator-Based Fabry-Perot Interferometer with Enhanced Vibration Sensitivity

Cited by 21 publications

References 29 publications

Review: Cantilever-Based Sensors for High Speed Atomic Force Microscopy

Review: Cantilever-Based Sensors for High Speed Atomic Force Microscopy

An In-Line Fiber Optic Fabry–Perot Sensor for High-Temperature Vibration Measurement

A Sensitivity-enhanced Fiber Grating Current Sensor Based on Giant Magnetostrictive Material for Large-Current Measurement

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