A Fabry–Perot Interferometer Strain Sensor Based on Concave-Core Photonic Crystal Fiber

Tian, Jiajun; Jiao, Yuzhu; Fu, Qi; Ji, Shaobo; Li, Zhigang; Quan, Mingran; Yao, Yong

doi:10.1109/jlt.2018.2797104

Cited by 69 publications

(20 citation statements)

References 32 publications

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“…Among these, FP interferometers are a commonly used transducing platform to realize RH sensing as these are robust, and small in size. FP cavities are also used in the fabrication of a broad range of sensors to monitor pressure 18 , humidity 16 , force 19 , and strain 20 . Suspended core microstructured optical fibers (MOFs) consist of large air holes surrounding a small core which is only a few microns.…”

Section: Microstructured Optical Fiber Based Fabry-pérot Interferometmentioning

confidence: 99%

Microstructured optical fiber based Fabry–Pérot interferometer as a humidity sensor utilizing chitosan polymeric matrix for breath monitoring

Shrivastav

Gunawardena

Liu

et al. 2020

Sci Rep

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This study reports a method for humidity sensing based on a specialty microstructured optical fiber (MOF). A suspended tri-core MOF was fabricated using the stack and draw technique. A low finesse sensing head was prepared by depositing a chitosan polymer matrix within the holes of the MOF, forming a Fabry-Pérot interferometer as a sensing platform while the chitosan film acts as the sensing material. The use of the probe for real-time breath monitoring was also successfully demonstrated. The probe possessed a maximum sensitivity of 81.05 pm/(%RH) for 90–95%RH range while the linear region of the sensor ranged from 70–95%RH. The temperature cross correlation was also experimented, and a lower influence of external temperature was observed. The probe shows an ultrafast response during human breath monitoring with a rising time and recovery time of 80 ms and 70 ms, respectively.

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Section: Microstructured Optical Fiber Based Fabry-pérot Interferometmentioning

confidence: 99%

Microstructured optical fiber based Fabry–Pérot interferometer as a humidity sensor utilizing chitosan polymeric matrix for breath monitoring

Shrivastav

Gunawardena

Liu

et al. 2020

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Cibula et al [ 17 ] proposed to fabricate an air cavity inside a single-mode fiber using the combination techniques both etching and splicing, and the strain response of the device was measured from −2500 to 2500 με. Moreover, the in-fiber FPIs for measuring tensile strain could be also fabricated by employing special optical fiber (SOF) structures, for instance, hollow-core photonic crystal fibers (PCFs) [ 18 , 19 , 20 ], Hollow-Core Fiber (HCF) [ 21 , 22 ] and so on. However, almost all the strain sensors mentioned above have a relatively small measurement range that far lower than the limited deformability of silica fiber [ 23 ].…”

Section: Introductionmentioning

confidence: 99%

A High-Strength Strain Sensor Based on a Reshaped Micro-Air-Cavity

Chen

Luo

Zou

et al. 2020

Sensors

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We demonstrate a high-strength strain sensor based on a micro-air-cavity reshaped through repeating arc discharge. The strain sensor has a micro-scale cavity, approximate plane reflection, and large wall thickness, contributing to a broad free spectrum range ~36 nm at 1555 nm, high fringe contrast ~38 dB, and super-high mechanical robustness, respectively. A sensitivity of ~2.39 pm/με and a large measurement range of 0 to 9800 με are achieved for this strain sensor. The strain sensor has a high strength, e.g., the tensile strain applied the sensor is up to 10,000 με until the tested the single-mode fiber is broken into two sections. In addition, it exhibited low thermal sensitivity of less than 1.0 pm/°C reducing the cross-sensitivity between tensile strain and temperature.

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“…In recent years, the fiber sensor has attracted extensive attention because of its advantages such as miniaturization, no power supply, fast response speed, strong corrosion-resistance, and anti-electromagnetic interference [ 25 , 26 , 27 , 28 , 29 ]. Some work has also been carried out on ice pressure detection.…”

Section: Introductionmentioning

confidence: 99%

Static Ice Pressure Measuring System Based on Fiber Loop Ring-Down Spectroscopy and FPGA

Deng

Wang

Pan

et al. 2020

Sensors

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Hydraulic engineering built in the cold region, such as reservoirs and hydropower stations, is often threatened by static ice pressure from nature. Therefore, it is of vital significance to research the pressure variation in the growth and melting processes of the ice layer for the design and protection of hydraulic structures in cold regions. This paper introduces an optical fiber sensor system based on the fiber loop ring-down spectroscopy technology and field-programmable gate array (FPGA) pulse modulation technology. An electro-optic modulation scheme that relied on FPGA to generate optical pulses with adjustable pulse width and period is proposed, which is more suitable for the in-situ observation. In addition, the temperature stability and repeatability of the system are also discussed. This system was applied to the real-time detection of static ice pressure on the sidewall and bottom of the polyvinyl chloride (PVC) pipe during the ice growth and melting processes. The results indicate that the system has favorable stability and sensitivity, and the relationship obtained between the static ice pressure and temperature could provide some references for the field application in the future.

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A Fabry–Perot Interferometer Strain Sensor Based on Concave-Core Photonic Crystal Fiber

Cited by 69 publications

References 32 publications

Microstructured optical fiber based Fabry–Pérot interferometer as a humidity sensor utilizing chitosan polymeric matrix for breath monitoring

Microstructured optical fiber based Fabry–Pérot interferometer as a humidity sensor utilizing chitosan polymeric matrix for breath monitoring

A High-Strength Strain Sensor Based on a Reshaped Micro-Air-Cavity

Static Ice Pressure Measuring System Based on Fiber Loop Ring-Down Spectroscopy and FPGA

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