Variations of magnetic field measurement with an extrinsic Fabry-Perot interferometer by double-beam technique

Kendir, Esra; Yaltkaya, Şerafettin

doi:10.1016/j.measurement.2019.107217

Cited by 17 publications

(6 citation statements)

References 24 publications

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“…When the membrane vibrates in viscous oil, the membrane vibration should be a damped vibration and its vibration amplitude will decrease gradually with time. The calculation results are consistent with the results of the free vibration of the film (membrane without stiffness) in the air studied by Kendir and Yaltkaya [16]. Therefore, when we design the membrane, the effect of oil viscosity on the membrane vibration displacement…”

Section: Time Domain Responsesupporting

confidence: 88%

“…Liu et al [15] deposited a perylene diimide derivative as a sensitive film on the membrane, and developed a new type of optical fiber sensor with a temperature sensitivity of 9.8 pm/°C by using the change in the refractive index of the membrane under hydrazine vapor. Kendir and Yaltkaya [16] used magnetostrictive material as the sensor membrane and successfully fabricated fiber optic magnetic field sensors that can sense changes in the magnetic field. Li et al [17] demonstrated through experiments a low-cost fiber optic accelerometer based on a polyethylene membrane, and the measured sensitivity was 135 mV/g, which greatly reduced the production cost of the probe.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Numerical Study of Vibration Characteristics for Sensor Membrane in Transformer Oil

Yao

Guan

et al. 2021

Energies

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Membrane is the most important element of extrinsic Fabry-Perot interferometer sensors. Studying the relationship between working medium viscosity and membrane vibration characteristics are critical to the sensor design because the transformer oil viscosity will cause viscous loss during membrane vibration. The numerical investigation of membrane vibration characteristics in transformer oil is performed based on the finite element method. Besides, the effect of energy loss caused by viscosity is examined. It is firstly showed that the membrane has the highest sensitivity for the first-order vibration mode, and the transformer oil reduces the fundamental frequency by 60%. Subsequently, when viscosity and heat loss are considered, the amplitude is less than one-fifth of that without energy loss. The viscosity has a more significant effect on the velocity and temperature fields when the vibration frequency is close to the natural frequency. Finally, viscosity has a remarkable impact on the time domain response. Mechanical energy is converted into thermal energy during the vibration and the amplitude will gradually decrease with time. The effect of energy loss caused by viscosity on the membrane vibration characteristics is revealed, which would be important for an oil-immersed membrane design.

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Section: Time Domain Responsesupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Numerical Study of Vibration Characteristics for Sensor Membrane in Transformer Oil

Yao

Guan

et al. 2021

Energies

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“…For magnetic field monitoring using optical fiber sensors, several sensing techniques have been reported, including the Faraday effect [21,22], magnetostrictive materials [23,24], and magnetic fluid based on versatile magneto-optical properties [25,26]. Some drawbacks may be observed when magnetostrictive and magnetic fluid materials are applied in a sensor context.…”

Section: Introductionmentioning

confidence: 99%

Miniaturized FPI-FBG integrated sensor for parallel monitoring of magnetic field and magnetic fluid refractive index

Samavati¹,

Samavati²,

Ismail³

et al. 2022

Phys. Scr.

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In this paper, a sensor combining Fabry–Perot interferometer (FPI) with fiber Bragg grating (FBG) is designed, fabricated, and experimentally demonstrated as an excellent alternative to traditional sensors to detect the magnetic field and refractive index (RI), simultaneously. The sensor comprises a magnetostrictive Ni-Fe alloy coated on partially-unclad FBG, connecting the two reﬂecting surfaces of the micro-FPI cavity. The magnetostrictive analysis shows that magnetostriction reaches the maximum value at 59.3% Ni concentration. The sensor performance test was conducted on the RI of magnetic fluid and external magnetic field changes. The probe sensitivity was found to be as high as 625.38 nm/RIU and 7.71 nm/mT, respectively. A matrix for simultaneous measurement of the magnetic field and RI was constructed using these sensitivity values. The stability of the sensor system over more than 300 hours is at a satisfactory level. Considering the accurate FBG modulation and particular design of the experiment proposed by this method, the resolution of 1.69×10-4 RIU and 0.016 mT for magnetic fluid and magnetic field could be achieved, respectively, which can meet the sensing demand for a wide range of applications.

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“…8 Due to their multifunctionality, several fiber interferometers have been developed to assess both physical and chemical parameters of interest. 9 Fabry-Perot (F-P) interferometers have been studied for the past decades and demonstrated, namely, in the sensing of temperature, 10 acceleration, 11,12 vibration, 13,14 pressure, 15 strain, 10,16,17 refractive index, 18 humidity, 19 magnetic fields, 20 or gas composition analysis. 21,22 The fabrication process of inline F-P interferometers using a splicing machine is a simple process that is easily repeatable.…”

Section: Introductionmentioning

confidence: 99%

Cavity length dependence on strain sensitivity for Fabry–Perot sensors

Rodrigues

Reis

Martins

et al. 2022

Micro & Optical Tech Letters

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This study presents the dependence of strain sensitivity on cavity length in conventional Fabry–Perot (F‐P) sensors. A high number of F‐P sensors were required and to ensure their reproducibility, a manufacturing process was developed to obtain similar sensors but with different types of lengths. A hollow‐core silica tube was used to fabricate several F‐P cavities by fusion splicing it between two sections of SMF28 fiber. The fabricated F‐P has a varying length ranging from 15 to 2500 μm. The cavities were measured under a microscope and the reflected spectrum was acquired for each one. Strain measurements were performed for a maximum strain of 1000 με. The strain sensitivity showed a highly linear correlation with ∆λFSR. Small length variations for short cavities heavily affect the FSR value. The smallest and longest cavities present sensitivities of 8.71 and 2.68 pm/με, respectively. Thermal characterization for low‐ and high‐temperature regimes was also performed and is constant for tested sensors.

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Variations of magnetic field measurement with an extrinsic Fabry-Perot interferometer by double-beam technique

Cited by 17 publications

References 24 publications

Numerical Study of Vibration Characteristics for Sensor Membrane in Transformer Oil

Numerical Study of Vibration Characteristics for Sensor Membrane in Transformer Oil

Miniaturized FPI-FBG integrated sensor for parallel monitoring of magnetic field and magnetic fluid refractive index

Cavity length dependence on strain sensitivity for Fabry–Perot sensors

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