High temperature strain sensing with alumina ceramic derived fiber based Fabry-Perot interferometer

Wang, Z; Liu, H; Ma, Zhongjun; Chen, Z; Wang, T

doi:10.1364/oe.27.027691

Cited by 20 publications

(4 citation statements)

References 34 publications

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“…In this section, the FEM model is validated by applying a force directly to the FPI cavity and investigating if it reproduces the expected theoretical behavior for the mechanical deformation, strain, and wavelength shift relation, determined using Equation (5). For this validation, a longitudinal force was applied to the capillary containing the Fabry-Perot cavity of initial diameter and length equal to 75 μm and 20 μm, respectively, and the mechanical deformation and corresponding interference spectra were obtained as a function of applied strain.…”

Section: Force Applied To the Fpi Cavity And Validation Of The Fem Mo...mentioning

confidence: 99%

“…Some of their key advantages over conventional sensors include immunity to electromagnetic interference and corrosion, small size, low-temperature sensitivity, and high spatial resolution. Some of the most often used techniques for building this type of sensor involve inserting two silica fibers into a glass capillary or splicing standard optical fibers to both sides of a hollow-core fiber, a capillary optical fiber, or a ceramic-derived fiber [2][3][4][5]. Other approaches include the use of PCFs [6,7], femtosecond laser [8,9], or splicing a piece of microfiber to the tip of an SMF [10].…”

Section: Introductionmentioning

confidence: 99%

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Fabry–Perot Cavity Optimization for Absolute Strain Sensing Using Finite Element Analysis

Pereira,

Gouvea,

Braga

et al. 2023

Sensors

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The finite element method (FEM) was used to investigate the optical–mechanical behavior of a Fabry–Perot Interferometer (FPI) composed of a capillary segment spliced between two sections of standard optical fiber. The developed FEM model was validated by comparing it with theory and with previously published experimental data. The model was then used to show that the absolute strain on the host substrate is usually smaller than the strain measurement obtained with the sensor. Finally, the FEM model was used to propose a cavity geometry that can be produced with repeatability and that yields the correct absolute strain experienced by the host substrate, without requiring previous strain calibration.

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Section: Force Applied To the Fpi Cavity And Validation Of The Fem Mo...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fabry–Perot Cavity Optimization for Absolute Strain Sensing Using Finite Element Analysis

Pereira,

Gouvea,

Braga

et al. 2023

Sensors

View full text Add to dashboard Cite

show abstract

“…Table 2 summarizes the performance parameters of IFPI and EFPI hightemperature sensors in recent years. Due to the thermo-optical effect, IFPI is more sensitive to temperature than strain or pressure [67,79,80] . From Table 2, it can be seen that IFPI is often used for temperature sensing and less often for strain sensing.…”

Section: Fiber Materials Fbg Type Max Stablementioning

confidence: 99%

Recent advances in optical fiber high-temperature sensors and encapsulation technique [Invited]

å¾�,

å�ž,

æ¢�

et al. 2023

Chin. Opt. Lett.

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In the aerospace field, for aerospace engines and other high-end manufacturing equipment working in extreme environments, like ultrahigh temperatures, high pressure, and high-speed airflow, in situ temperature measurement is of great importance for improving the structure design and achieving the health monitoring and the fault diagnosis of critical parts. Optical fiber sensors have the advantages of small size, easy design, corrosion resistance, anti-electromagnetic interference, and the ability to achieve distributed or quasi-distributed sensing and have broad application prospects for temperature sensing in extreme environments. In this review, first, we introduce the current research status of fiber Bragg grating-type and Fabry-Perot interferometer-type high-temperature sensors. Then we review the optical fiber hightemperature sensor encapsulation techniques, including tubular encapsulation, substrate encapsulation, and metalembedded encapsulation, and discuss the extreme environmental adaptability of different encapsulation structures. Finally, the critical technological issues that need to be solved for the application of optical fiber sensors in extreme environments are discussed.

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“…In terms of sensing principle, the fiber optic strain sensors proposed so far can be divided into three types. The first type is an interferometric fiber optic strain sensor, such as an all-fiber optical demodulator, based on the Michelson interferometer (MI) for signal interrogation [ 1 ]; ultra-sensitivity strain [ 2 ] and high-temperature strain [ 3 ] measurement are realized based on the Fabry-Perot interferometer (FPI), a hybrid interferometer that can measure strain and temperature simultaneously, composed of FPI and MI cascade with each other [ 4 ], and strain sensors based on the Mach-Zehnder interferometer(MZI) [ 5 , 6 , 7 ], etc. The second type is a fiber Bragg grating strain sensor, which is mainly used for structural health monitoring in the engineering field [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

Temperature-Compensated Multi-Point Strain Sensing Based on Cascaded FBG and Optical FMCW Interferometry

Feng

Cheng

Chen

et al. 2022

Sensors

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We proposed a novel temperature-compensated multi-point strain sensing system based on cascaded FBG and optical FMCW interferometry. The former is used for simultaneous sensing of temperature and strain, and the latter is used for position information reading and multiplexing. In the experiment, a narrow linewidth laser with continuous frequency-sweeping was used as the light source. After demodulating the beat-frequency signal, the link information of the 16 m fiber was obtained, and the measured result was identical to the actual position. The measurement accuracy reached 50.15 mm, and the dynamic range was up to 22.68 dB. Meanwhile, we completed the sensing experiments for temperature range from 20 °C to 90 °C and strain range from 0 με to 7000 με. The sensitivity of the sensing system to temperature was 10.21 pm/°C, the sensitivity and accuracy to strain were as high as 1.163 pm/με and 10 με, respectively. Finally, the measured strain and temperature values were obtained using the sensing matrix. The sensing system has important practical significance in the field of quasi-distributed strain measurement.

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High temperature strain sensing with alumina ceramic derived fiber based Fabry-Perot interferometer

Cited by 20 publications

References 34 publications

Fabry–Perot Cavity Optimization for Absolute Strain Sensing Using Finite Element Analysis

Fabry–Perot Cavity Optimization for Absolute Strain Sensing Using Finite Element Analysis

Recent advances in optical fiber high-temperature sensors and encapsulation technique [Invited]

Temperature-Compensated Multi-Point Strain Sensing Based on Cascaded FBG and Optical FMCW Interferometry

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