In-Fiber Fabry–Perot Cavity Sensor for High-Temperature Applications

Mathew, Jinesh; Schneller, Oliver; Polyzos, D.; Havermann, Dirk; Carter, Richard M.; MacPherson, William N.; Hand, Duncan Paul; Maier, Robert R. J.

doi:10.1109/jlt.2015.2397936

Cited by 88 publications

(28 citation statements)

References 24 publications

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“…FPI high-temperature sensors are also fabricated by various techniques, including diaphragm-based [16,17], special fiber-based [18][19][20][21][22][23][24][25][26][27], multi-fusion splicing-based [28,29], chemical etching-based [30], FIB-based [31,32] and laser micromachining-based [33,34]. The sensors created with the first four techniques are assembly ones, which usually need to assemble multiple separated components together with a fusion splicer.…”

Section: Introductionmentioning

confidence: 99%

Refractive-index-modified-dot Fabry-Perot fiber probe fabricated by femtosecond laser for high-temperature sensing

Chen¹,

Shu²

2018

Opt. Express

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An optical fiber Fabry-Perot probe sensor for high-temperature measurement is proposed and demonstrated, which is fabricated by inducing a refractive-index-modified-dot (RIMD) in the fiber core near the end of a standard single mode fiber (SMF) using a femtosecond laser. The RIMD and the SMF end faces form a Fabry-Perot interferometer (FPI) with a high-quality interference fringe visibility (>20dB). As a high-temperature sensor, such an FPI exhibits a sensitivity of 13.9pm/°C and 18.6pm/°C in the range of 100-500°Cand 500-1000°C,respectively. The fabrication process of this device is quite straightforward, simple, time saving, and the sensor features small size, ease of fabrication, low cost, assembly-free, good mechanical strength, and high linear sensitivity.

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Section: Introductionmentioning

confidence: 99%

Refractive-index-modified-dot Fabry-Perot fiber probe fabricated by femtosecond laser for high-temperature sensing

Chen¹,

Shu²

2018

Opt. Express

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“…The sensitivities obtained are 16.42 pm/℃. The temperature response is caused by the thermal expansion of the material and thermo-optic effect, and the nonlinearity may be caused by the nonlinear change in the thermal expansion coefficient [23] In order to test the liquid RI response, a sample MOFPI with the length L of 269 µm was vertically inserted in NaCl solution with different concentrations while the temperature was kept at the room temperature. The RI is related to the concentration of the NaCl solution and varies from 1.3333 to 1.4069.…”

Section: Methodsmentioning

confidence: 99%

Characterization of miniature fiber-optic Fabry-Perot interferometric sensors based on hollow silica tube

2016

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A miniature fiber-optic Fabry-Perot interferometer (MOFPI) fabricated by splicing a hollow silica tube (HST) with inner diameter of 4 m to the end of a single-mode fiber is investigated and experimentally demonstrated. The theoretical relationship between the free spectrum range and the length of HST is verified by fabricating several MOFPIs with different lengths. We characterize the MOFPIs for temperature, liquid refractive index, and strain. Experimental results show that the sensitivities of the temperature, liquid refractive index, and strain are 16.42 pm/℃,-118.56 dB/RIU, and 1.21 pm/, respectively.

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“…The measured result of the infrared thermometer is influenced by many factors such as background radiation, measuring distance, and gas composition, which amplify sensing errors [4,5]. With many advantages such as high sensitivity, compact size, immunity to electromagnetic interferences, and durability amid harsh environments [6], optical fiber sensing technology has developed rapidly, and various optical fiber approaches for high-temperature measurement have also been reported [1,7,8,9,10,11,12,13]. Among these optical fiber high-temperature sensors, regenerated fiber Bragg gratings (RFBGs) have received much attention.…”

Section: Introductionmentioning

confidence: 99%

“…By means of a multimode interference within a suspended-core PCF, high-temperature measurement up to 1100 °C with a sensitivity of 11 pm/°C was realized [22]. For high-temperature measurements, a higher upper-temperature limit and sensitivity are always expected, which will contribute to a wider working scope and higher temperature resolution [8]. The viable approaches to improve the performance of sensors include the design of novel sensing structures, the adoption of materials with a higher glass-softening temperature, thermo-optic coefficient, and thermo-expansion coefficient.…”

Section: Introductionmentioning

confidence: 99%

Fabry-Perot Interferometric High-Temperature Sensing Up to 1200 °C Based on a Silica Glass Photonic Crystal Fiber

Wang

et al. 2018

Sensors

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A Fabry-Perot interferometric sensor for temperature measurement was fabricated based on a silica glass solid-core photonic crystal fiber with a central air-bore. By splicing a stub of photonic crystal fiber to a standard single-mode fiber, an intrinsic Fabry-Perot cavity was formed inside the photonic crystal fiber. Sensing experiment results show that the sensor can work stably for a consecutive 24 h under temperatures up to 1100 °C, and the short-term operation temperature can reach as high as 1200 °C (<30 min). In the measurement range of 300–1200 °C, the temperature sensitivity of the peak wavelength shift can reach as high as 15.61 pm/°C, with a linearity of 99.76%. The presented interferometric sensor is compact in size and possesses advantages such as an extended working range and high sensitivity, showing promising application prospects.

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In-Fiber Fabry–Perot Cavity Sensor for High-Temperature Applications

Cited by 88 publications

References 24 publications

Refractive-index-modified-dot Fabry-Perot fiber probe fabricated by femtosecond laser for high-temperature sensing

Refractive-index-modified-dot Fabry-Perot fiber probe fabricated by femtosecond laser for high-temperature sensing

Characterization of miniature fiber-optic Fabry-Perot interferometric sensors based on hollow silica tube

Fabry-Perot Interferometric High-Temperature Sensing Up to 1200 °C Based on a Silica Glass Photonic Crystal Fiber

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