Fabrication of dual-parameter fiber-optic sensor by cascading FBG with FPI for simultaneous measurement of temperature and gas pressure

Liu, Yinggang; Yang, Danqing; Wang, Yuxi; Zhang, Ting; Shao, Min; Yu, Dakuan; Fu, Haiwei; Jia, Zhang

doi:10.1016/j.optcom.2019.03.034

Cited by 59 publications

(12 citation statements)

References 19 publications

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“…being k FP P and k FP T the pressure and temperature sensitivities of the FP cavity, respectively [7].…”

Section: Fpmentioning

confidence: 99%

“…However, to perform internal measurements, it is required a sensor immune to electromagnetic interferences, chemically inert, and robust, which are not characteristic of these technologies. Fiber optic sensors present themselves the potential of performing external and internal measurements on LiB, due to their small dimensions, multiplexing ability, and the previously mentioned characteristics [6,7].…”

Section: Introductionmentioning

confidence: 99%

“…Since fiber sensors can detect multiple parameters such as temperature, pressure, strain, and refractive index, cross-sensitivity is a problem and it is necessary strategies to allow the simultaneous discrimination of such parameters [7,8]. One of the strategies relies on the usage of two microstructures to monitor two parameters.…”

Section: Introductionmentioning

confidence: 99%

“…One of the strategies relies on the usage of two microstructures to monitor two parameters. Liu et al [7] cascaded a FBG sensor recorded in a photosensitive (PS) singlemode fiber (SMF) to a FP cavity created by a UV-glue cap at the SMF tip for simultaneous measurement of temperature and pressure. The FBG was recorded as close as possible to the cap to ensure that both sensors are affected by the same environmental changes.…”

Section: Introductionmentioning

confidence: 99%

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Innovative hybrid optical sensing design to simultaneously discriminate pressure and temperature

Freitas

Matuck

Bierlich

et al. 2022

J. Phys.: Conf. Ser.

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In this work, hybrid optical fiber sensors based on Fabry-Perot (FP) interferometer and Fiber Bragg Grating (FBG) sensors were developed to simultaneously measure two external parameters, pressure, and temperature. The proposed sensor consists of a photosensitive Single-Mode Fiber (SMF), where the FBG is recorded, and spliced to a small section of a Hollow-Core Fiber (HCF). After that, the HCF tip is submerged in a UV-photosensitive polymer (RI = 1.46), creating three cavities, which will create two observable light interferences, allowing the observation of two FP responses in the spectral response. Two sensors with different HCF lengths were created to compare their sensitivities. After curing, the sensors were calibrated to both parameters in the ranges of 0.0 to 4.0 bar (steps of 1.0 bar) and 22.0 to 30.0 °C (steps of 2.0 °C), respectively. By tracking the peak shifts of the FP, it achieved higher sensitivities for the sensor with the shorter HCF tip (182.30 µm of HCF and 28.56 µm of UV-polymer lengths) of around 31.65 nm/bar and 1.53 nm/°C. On the other side, the sensor with the longer HCF tip (318.56 µm of HCF and with 52.17 µm of UV-polymer lengths) achieved 15.65 nm/bar and 1.02 nm/°C. Regarding the FBGs, they achieved 9.65 and 7.86 pm/°C for the longer and shorter sensor, respectively, while presenting insensitivity to pressure. Therefore, the shorter FP cavity produces the more sensitive sensor because, since its length is shorter and possesses a concave shape, it is more susceptible to external changes. Thus, variations of pressure and temperature could be discriminated by using the matrixial method with the FP and FBG sensitivities, given that the determinant of the coefficient matrix results is -0.31, a non-zero value. The developed sensor has the potential to integrate specific applications, such as LiBs to measure and decouple both parameters.

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“…being k FP P and k FP T the pressure and temperature sensitivities of the FP cavity, respectively [7].…”

Section: Fpmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Innovative hybrid optical sensing design to simultaneously discriminate pressure and temperature

Freitas

Matuck

Bierlich

et al. 2022

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

show abstract

“…Several studies have characterized the investigations of single or dual-parameter monitoring based on fiber tip bubble [3], Mach-Zehnder interferometer [4], fiber Bragg gratings [5], Sagnac interferometer [6], etc. Due to the advantages of small size, good measurement performance, and survivability in complicated electromagnetic environment [7][8][9][10][11][12][13][14][15][16][17][18][19], Fabry-Perot Interferometer (FPI)-based dual-parameter fiber sensors have been extensively studied for the measurement of temperature and pressure.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Composite Structure with Dual Fabry–Perot Cavities for Temperature and Pressure Sensing

Wang

Liu

et al. 2021

Photonics

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To deeply analyze the influence of diaphragm materials on the temperature and pressure sensitivity of Fabry–Perot interferometer-based dual-parameter fiber sensors, the multiple transfer method was used to fabricate the dual Fabry–Perot cavities, respectively, consisting of the following combinations: epoxy resin AB/polydimethylsiloxane (PDMS), Ecoflex0030 silicone rubber /PDMS, and PDMS/Ecoflex0030 silicone rubber. Experimental results show that the temperature sensitivities are, respectively, 528, 540, and 1033 pm/°C in the range of 40–100 °C. Within the applied pressure range of 100–400 kPa, the pressure sensitivities are, respectively, 16.0, 34.6, and 30.2 pm/kPa. The proposed sensors have advantages of proper sensitivity, simple fabrication, cost-effectiveness, controllable cavity length, and suitability for practical sensing applications.

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Crack width estimate in reinforced concrete with FBG sensor: experimental and numerical analysis

Wang

Hao

et al. 2022

Optoelectron. Lett.

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Fabrication of dual-parameter fiber-optic sensor by cascading FBG with FPI for simultaneous measurement of temperature and gas pressure

Cited by 59 publications

References 19 publications

Innovative hybrid optical sensing design to simultaneously discriminate pressure and temperature

Innovative hybrid optical sensing design to simultaneously discriminate pressure and temperature

Investigation of Composite Structure with Dual Fabry–Perot Cavities for Temperature and Pressure Sensing

Crack width estimate in reinforced concrete with FBG sensor: experimental and numerical analysis

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