Miniatured Fabry-Perot strain probe based on anti-resonant hollow core fiber

Zhao, Xiaonan; Wu, Xu; Zuo, Cheng; Mu, Shengquan; Zhang, Wujun; Shi, Jinhui; Gui, Lei; Guang, Dong; Yu, Benli

doi:10.1016/j.measurement.2022.111775

Cited by 8 publications

(4 citation statements)

References 19 publications

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“…Usually, FBG sensors use only wavelength as the means of detection for a measured parameter, which limits their ability to directly distinguish between different parameters and can easily lead to cross-interference [21,22]. To overcome this problem, researchers have been exploring new approaches and structures, such as the use of multi-grating structures [23][24][25], special fiber structures [26][27][28][29] fiber Fabry-Perot interference [30][31][32][33] structures, polymer coatings [34][35][36][37], and multi-sensor networks [38][39][40] to improve the multiparameter measurement capability and cross-interference resistance of FBG sensors. For example, Fu et al [25] proposed a fiber sensor based on a cascaded long-period fiber grating with a double-clad fiber composite tapered structure.…”

Section: Introductionmentioning

confidence: 99%

Multiparameter measurement depending on the cavity-length differentiation characteristics of a microfiber Fabry–Perot interferometer

Liu,

Ran,

Liu

et al. 2024

Meas. Sci. Technol.

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To solve the cross-sensitivity problem affecting optical fiber sensors and realize multiparameter measurement, a microfiber Fabry–Perot interferometer (MFPI) is proposed and experimentally demonstrated. Simultaneous measurement of two distinct physical parameter (temperature and strain) is realized by monitoring wavelength and reflectivity of MFPI. In the temperature field range of 22-36 ℃, the maximum temperature sensitivity can reach 12 pm/℃. The maximum strain sensitivity is up to 0.8 pm/με in the strain range of 0-800 με. In the simultaneous measurement experiments, the relative errors of temperature and strain were 4.0 % and 0.8%, respectively. Furthermore, the sensing element used in this method was just a single fiber grating sensor without any coating layer, which demonstrated the significant advantage of the proposed method in reducing the complexity and cost of multiparameter measurement.

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Section: Introductionmentioning

confidence: 99%

Multiparameter measurement depending on the cavity-length differentiation characteristics of a microfiber Fabry–Perot interferometer

Liu,

Ran,

Liu

et al. 2024

Meas. Sci. Technol.

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“…The following focuses on strain, magnetic field (MF), and refractive index (RI) sensors composed of the ARROW mechanism in HCF. Zhao et al designed an Fabry‐Perot interferometer strain probe based on ARROW to measure strain 17 . Pereira et al proposed a strain sensor based on ARROW 18 .…”

Section: Introductionmentioning

confidence: 99%

“…Zhao et al designed an Fabry-Perot interferometer strain probe based on ARROW to measure strain. 17 Pereira et al proposed a strain sensor based on ARROW. 18 Yue et al reported a strain sensor based on ARROW.…”

Section: Introductionmentioning

confidence: 99%

Tapered hollow‐core fiber sensor for monitoring axial strain, magnetic field, and refractive index

Gao,

Jiang,

Deng

et al. 2024

Micro & Optical Tech Letters

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A high sensitivity sensor is proposed to measure axial strain, magnetic field, and refractive index. Hollow‐core fiber (HCF) and single mode fiber (SMF) are fused together to form the “SMF–HCF–SMF,” then tapering HCF, and finally forming a sensor. The light in the sensor structure forms an antiresonant reflection optical waveguide mechanism. The sensor has particularly thin waist circumference, therefore the surface evanescent field of the sensor is easily affected by environmental parameters, making it particularly sensitive to environmental parameters. The axial strain sensitivity obtained by the sensor is as high as −31.87 pm/µε. The magnetic field sensitivity obtained by combining the sensor with magnetostrictive material Terfenol‐D in the range of 10–40 mT is 123.9 pm/mT. The sensor measures the refractive index of NaCl solution with a sensitivity of up to 2109.308 nm/RIU (RIU: refractive index unit). Additionally, the sensor has good stability and repeatability when measuring three physical quantities. The sensor has a compact structure, stable performance, simple manufacturing, and can measure multiple parameters in biochemical engineering, industrial structural health detection, and marine resource detection.

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“…Comparison of sensitivity with previous sensors. Temperature 1.5005 nm • C −1 −25 • C-85 • C Cascaded SMF and HCW based on VE [39] Temperature 0.39 nm • C −1 35 • C-75 • C Polymer-filled SCF [40] Temperature −164 pm • C −1 25 • C-60 • C CTFBG-FPI and VE [41] Temperature −1.084 nm • C −1 40 • C-90 • C FPI probe based on HCF[42] …”

mentioning

confidence: 99%

Paralleled Sagnac interferometer and Mach–Zehnder interferometer for enhanced measurements sensitivity based on Vernier effect

Shi,

Chen,

et al. 2024

J. Phys. D: Appl. Phys.

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In this paper, Vernier effect (VE) was experimentally excited through paralleling Sagnac interferometer (SI) and Mach-Zehnder interferometer (MZI). SI was fabricated by a 38 cm long panda-shaped polarization maintaining fiber (PMF) in the Sagnac loop, while MZI was made through pulling single mode fiber (SMF) into a tapered type fiber. The strain and temperature sensitivities of the paralleled SI and MZI were 51.97 pm/με and 2.94 nm/℃ respectively, which were increased approximately 3 times than an individual SI whose measurement sensitivities of strain and temperature were 18.24 pm/με and 0.98 nm/℃ correspondingly. The theoretical analysis of the single interference and paralleled interferences were verified by the experimental results. The proposed sensor shows simple in fabrication, high sensitivity, and good hysteresis, is a strong competitor in monitoring the strain and temperature.

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Miniatured Fabry-Perot strain probe based on anti-resonant hollow core fiber

Cited by 8 publications

References 19 publications

Multiparameter measurement depending on the cavity-length differentiation characteristics of a microfiber Fabry–Perot interferometer

Multiparameter measurement depending on the cavity-length differentiation characteristics of a microfiber Fabry–Perot interferometer

Tapered hollow‐core fiber sensor for monitoring axial strain, magnetic field, and refractive index

Paralleled Sagnac interferometer and Mach–Zehnder interferometer for enhanced measurements sensitivity based on Vernier effect

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