An Optical Fiber Hydrogen Sensor Using a Palladium-Coated Ball Lens

Chowdhury, Sahar A.; Correia, Ricardo; Francis, Daniel; Brooks, Simon; Jones, Benjamin; Thompson, Alexander W. J.; Hodgkinson, Jane; Tatam, Ralph P.

doi:10.1109/jlt.2014.2384203

Cited by 8 publications

(4 citation statements)

References 17 publications

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“…The sensor is compact and easy to fabricate. Chowdhury et al 27 created a self-referenced optical fiber refractometer for H 2 using a ball lens acting as the sensor head. A 350 μm ball lens was created at the tip of a single mode fiber and then coated with a 40 nm layer of Pd.…”

Section: ■ Sensors For (Dissolved) Gases and Vaporsmentioning

confidence: 99%

Fiber-Optic Chemical Sensors and Biosensors (2013–2015)

2015

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Section: ■ Sensors For (Dissolved) Gases and Vaporsmentioning

confidence: 99%

Fiber-Optic Chemical Sensors and Biosensors (2013–2015)

2015

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“…The Fresnel reflection optical intensity of bare SMF did not change considerably, whereas for the PS-coated sensor with the 8.0 µm thick layer, the Fresnel reflection optical intensity changed with respect to the temperature. This is attributed to the change in the RI and volume of the coated PS with temperature, which affects the optical intensity [17]. This data demonstrated a polynomial fit with R 2 = 0.995, illustrating that this system is a good candidate as a fiber optic temperature sensor.…”

Section: Resultsmentioning

confidence: 74%

“…Meanwhile, Fabry-Perot interferometer sensors could be based on the Fresnel reflection technique for temperature measurement, which have some advantages including ease of preparation, suitable for real time operation, good repeatability, and high sensitivity [3,14]. Fabry-Perot interferometer optical fiber sensors demonstrate an interference phenomenon resulting from differences in the refractive index (RI) of the three different materials (optical fiber, coating material, and air) [15][16][17]. For example, Fabry-Perot interferometer sensors were developed by coating the optical fiber with agarose [18,19], polymers [20][21][22][23], other porous silica xerogels [24], carbon nanotubes [25], and ZnO [11].…”

Section: Introductionmentioning

confidence: 99%

Enhancing Temperature Sensitivity of the Fabry–Perot Interferometer Sensor with Optimization of the Coating Thickness of Polystyrene

Salunkhe

Lee

et al. 2020

Sensors

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The exploration of novel polymers for temperature sensing with high sensitivity has attracted tremendous research interest. Hence, we report a polystyrene-coated optical fiber temperature sensor with high sensitivity. To enhance the temperature sensitivity, flat, thin, smooth, and air bubble-free polystyrene was coated on the edge surface of a single-mode optical fiber, where the coating thickness was varied based on the solution concentration. Three thicknesses of the polystyrene layer were obtained as 2.0, 4.1, and 8.0 μm. The temperature sensor with 2.0 μm thick polystyrene exhibited the highest temperature sensitivity of 439.89 pm °C−1 in the temperature range of 25–100 °C. This could be attributed to the very uniform and thin coating of polystyrene, along with the reasonable coefficient of thermal expansion and thermo-optic coefficient of polystyrene. Overall, the experimental results proved the effectiveness of the proposed polystyrene-coated temperature sensor for accurate temperature measurement.

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“…[57] Although Pd has achieved larger sensitivity than Au and Ag, whose mechanisms have also been well studied, problems of narrow response pressure range, hysteresis, non-linear responses, susceptibility to temperature, and slow dynamics still exist. [99][100][101][102] These problems will decrease the accuracy and make the response time > 10s. In addition, Pd is expensive (≈88 $ g −1 ), undermining its commercial applications.…”

Section: Direct Hydrogen Detection Based On Plasmonic Npsmentioning

confidence: 99%

Plasmonic Hydrogen Sensors

Sun

Zhao

2022

Small

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Hydrogen is regarded as the ultimate fuel and energy carrier with a high theoretical energy density and universality of sourcing. However, hydrogen is easy to leak and has a wide flammability range in air. For safely handling hydrogen, robust sensors are in high demand. Plasmonic hydrogen sensors (PHS) are attracting growing interest due to the advantages of high sensitivity, fast response speed, miniaturization, and high‐degree of integration, etc. In this review, the mechanism and recent development (mainly after the year 2015) of hydrogen sensors based on plasmonic nanostructures are presented. The working principle of PHS is introduced. The sensing properties and the effects of resonance mode, configuration, material, and structure of the plasmonic nanostructures on the sensing performances are discussed. The merit and demerit of different types of plasmonic nanostructures are summarized and potential development directions are proposed. The aim of this review is not only to clarify the current strategies for PHS, but also to give a comprehensive understanding of the working principle of PHS, which may inspire more ingenious designs and execution of plasmonics for advanced hydrogen sensors.

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An Optical Fiber Hydrogen Sensor Using a Palladium-Coated Ball Lens

Cited by 8 publications

References 17 publications

Fiber-Optic Chemical Sensors and Biosensors (2013–2015)

Fiber-Optic Chemical Sensors and Biosensors (2013–2015)

Enhancing Temperature Sensitivity of the Fabry–Perot Interferometer Sensor with Optimization of the Coating Thickness of Polystyrene

Plasmonic Hydrogen Sensors

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