Improved performance of fiber optic hydrogen sensor based on WO3-Pd2Pt-Pt composite film and self-referenced demodulation method

Dai, Jixiang; Peng, Wen; Wang, Gaopeng; Feng, Xian; Qin, Yuhuan; Wang, Min; Yang, Minghong; Deng, Hui; Zhang, Pengcheng

doi:10.1016/j.snb.2017.04.103

Cited by 27 publications

(9 citation statements)

References 44 publications

(68 reference statements)

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“…Over the past decades, various types of hydrogen gas sensors have been developed, including semiconductor, , thermoelectric, , optical, − or surface acoustic wave type. ,− Among them, the optical-fiber sensors provide a range of advantages, including simplicity, cost-efficiency, high sensitivity, possibility of remote sensing, electric insulation, and simple integration with another devices. − Several structures of optical fiber hydrogen sensors have been proposed, such as Fabry–Perot interferometer or fiber Bragg gratings, − and show a large detection range but commonly, low sensitivity. An alternative approach consists of the utilization of the plasmon-active fiber to increase the sensitivity toward the hydrogen, since in this case, the resonance condition of plasmon excitation (i.e., wavelength position of plasmon absorption band) is highly sensitive to the dielectric constant of the surrounding medium. − …”

Section: Introductionmentioning

confidence: 99%

Fast and All-Optical Hydrogen Sensor Based on Gold-Coated Optical Fiber Functionalized with Metal–Organic Framework Layer

et al. 2019

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Remote detection of hydrogen, without the utilization of electronic component or elevated temperature, is one of the hot topics in the hydrogen technology and safety. In this work, the design and realization of the optical fiber-based hydrogen sensor with unique characteristics are proposed. The proposed sensor is based on the gold-coated multimode fiber, providing the plasmon properties, decorated by the IRMOF-20 layer with high selectivity and affinity toward hydrogen. The IRMOF-20 layer was grown by a surface-assisted technique, and its formation and properties were studied using X-ray photoelectron spectroscopy, Raman, X-ray diffraction, and Brunauer−Emmett−Teller techniques. Simultaneous ellipsometry results indicate the apparent changes of the refractive index of the IRMOF-20 layer due to hydrogen sorption. As results, the presence of hydrogen led to the pronounced changes of plasmon band wavelength position as well as its intensity increase. The proposed hydrogen sensors were favorably distinguished by a high response/recovery rate, excellent selectivity toward the hydrogen, very low temperature dependency, functionality at room or lower temperature, insensitivity toward the humidity, and the presence of CO 2 , CO, or NO 2 . Additionally, the proposed hydrogen sensor showed good reversibility, reproducibility, and long-term stability.

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Section: Introductionmentioning

confidence: 99%

Fast and All-Optical Hydrogen Sensor Based on Gold-Coated Optical Fiber Functionalized with Metal–Organic Framework Layer

et al. 2019

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“…Another fiber optic sensor based on a WO 3 -Pd 2 Pt-Pt composite film and a self-referenced demodulation method was used to monitor the hydrogen. Two Bragg gratings associated with high-low reflectivity, using a WO 3 -Pd 2 Pt-Pt composite film, were used to detect the H 2 concentration of 20 ppm at 25 • C [83]. The hydrogen sensor showed a quick response rate, good repeatability, as well as anti-humidity interference and selectivity during the hydrogen response.…”

Section: Dissolved Gas Analysismentioning

confidence: 99%

Review of Fiber Optic Diagnostic Techniques for Power Transformers

N’cho

Fofana

2020

Energies

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Diagnostic and condition monitoring of power transformers are key actions to guarantee their safe operation. The subsequent benefits include reduced service interruptions and economic losses associated with their unavailability. Conventional test methods developed for the condition assessment of power transformers have certain limitations. To overcome such problems, fiber optic-based sensors for monitoring the condition of transformers have been developed. Flawlessly built-up fiber optic-based sensors provide online and offline assessment of various parameters like temperature, moisture, partial discharges, gas analyses, vibration, winding deformation, and oil levels, which are based on different sensing principles. In this paper a variety and assessment of different fiber optic-based diagnostic techniques for monitoring power transformers are discussed. It includes significant tutorial elements as well as some analyses.

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“…Selectivity toward H 2 is crucial to avoid false alarms. 118 The main types of fiber-optic sensing schemes, FBG-, 119-125 modified FBG-, [126][127][128][129] reflection, 130,131 and interferometer-132 based are all by coating Pb-film on fiber as shown in Figs. 12(a)-12(d), respectively.…”

Section: Hydrogen Monitoringmentioning

confidence: 99%

“…128 Like the structure of the side-polished FBG, the sensitivity of a 16-μm chemically etched FBG-based hydrogen sensor is improved by >30%. 129 For reflection-based sensors, 130,131 as shown in Fig. 12(c), the Pd film is coated at the end face of an optical fiber and its reflectivity is changed due to the H 2 absorption.…”

Section: Hydrogen Monitoringmentioning

confidence: 99%

Review on fiber-optic sensing in health monitoring of power grids

et al. 2019

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Fiber-optic sensing technology is best adapted to health monitoring and evaluation of power grids because of its immunity of electromagnetic interference, capabilities of multiplexing and distributed sensing, and tolerance to harsh environments. We review key fiber-optic sensing technologies, including fiber Bragg gratings, fiber-optic interferometers, optical time domain reflectometries, and their applications in three main parts of power grids, transformers, power towers, and overhead transmission lines, during the past 20 years. In particular, optical fiber composite overhead ground wire and optical phase conductor applied in power grids are the areas of great potential to go further. The perspectives of an intelligent fault diagnosis subsystem for power grids based on a fiber-optic sensing network are discussed, and related on-going work is described. The review shall be of benefit to both engineers and researchers in power grids and fiber-optic sensing.

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Improved performance of fiber optic hydrogen sensor based on WO3-Pd2Pt-Pt composite film and self-referenced demodulation method

Cited by 27 publications

References 44 publications

Fast and All-Optical Hydrogen Sensor Based on Gold-Coated Optical Fiber Functionalized with Metal–Organic Framework Layer

Fast and All-Optical Hydrogen Sensor Based on Gold-Coated Optical Fiber Functionalized with Metal–Organic Framework Layer

Review of Fiber Optic Diagnostic Techniques for Power Transformers

Review on fiber-optic sensing in health monitoring of power grids

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