Sapphire Fabry-Perot high-temperature sensor study

Yi-qiang, Yao; Liang, Wei; Xinwang, Gui; Fan, Dian

doi:10.1117/12.2264870

Cited by 6 publications

(3 citation statements)

References 11 publications

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“…It has good measurement accuracy In recent years, there has been a great deal of research directed at improving the sensitivity of fiber optic FPI sensors [71,72]. In addition, there are some studies using fiber optic FPI sensors for SHM in high-temperature environments-for example, hightemperature fiber optic FPI temperature sensors [73], high-temperature fiber optic FPI pressure sensors [74], high-temperature fiber optic FPI strain sensors [75], high-temperature fiber optic FPI vibration sensors [76], etc. SOFO sensors are successful low-coherent interferometric sensors for SHM [48].…”

Section: Single-point Fiber Optic Sensorsmentioning

confidence: 99%

Fiber Optic Sensing Technology and Vision Sensing Technology for Structural Health Monitoring

Wang

Guo

Han

et al. 2023

Sensors

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Structural health monitoring is currently a crucial measure for the analysis of structural safety. As a structural asset management approach, it can provide a cost-effective measure and has been used successfully in a variety of structures. In recent years, the development of fiber optic sensing technology and vision sensing technology has led to further advances in structural health monitoring. This paper focuses on the basic principles, recent advances, and current status of applications of these two sensing technologies. It provides the reader with a broad review of the literature. It introduces the advantages, limitations, and future directions of these two sensing technologies. In addition, the main contribution of this paper is that the integration of fiber optic sensing technology and vision sensing technology is discussed. This paper demonstrates the feasibility and application potential of this integration by citing numerous examples. The conclusions show that this new integrated sensing technology can effectively utilize the advantages of both fields.

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Section: Single-point Fiber Optic Sensorsmentioning

confidence: 99%

Fiber Optic Sensing Technology and Vision Sensing Technology for Structural Health Monitoring

Wang

Guo

Han

et al. 2023

Sensors

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“…While this method is simple, inexpensive, and generally reliable, it is sensitive to strong magnetic fields [ 3 ]. In contrast, the use of crystalline materials using luminescence or a combination of luminescence and grey body radiation is a relatively new and very promising way to measure not only low but also high temperatures [ 4 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

Construction of a High-Temperature Sensor for Industry Based on Optical Fibers and Ruby Crystal

Hercík,

Mikolajek,

Byrtus

et al. 2024

Sensors

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This paper presents the construction of an innovative high-temperature sensor based on the optical principle. The sensor is designed especially for the measurement of exhaust gases with a temperature range of up to +850 °C. The methodology is based on two principles-luminescence and dark body radiation. The core of this study is the description of sensing element construction together with electronics and the system of photodiode dark current compensation. An advantage of this optical-based system is its immunity to strong magnetic fields. This study also discusses results achieved and further steps. The solution is covered by a European Patent.

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“…10.1109/JPHOT.2022.3178149 FP sensors to generate high quality fringes because of the large mode number in sapphire fibers. The phase dispersion between different modes reduces the visibility[19].…”

mentioning

confidence: 99%

Sapphire Fiber Fabry-Perot Sensors With High Fringe Visibility

Zhang

Pan

et al. 2022

IEEE Photonics J.

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It is difficult for sapphire fiber Fabry-Perot (FP) sensors to generate high quality interference fringes because their highly multimode property. In this paper, we report a sapphire fiber FP strain sensing system with high fringe visibility, realized by the use of a self-made fiber collimator. The collimator is made by a quarter-period graded index optical fiber (GIOF) fused to a single mode fiber (SMF). In the contrast experiment, no effective signal was collected from a sensing system without the fiber collimator. While adding a fiber collimator into the sensing system, high visibility interference fringes were collected. The fringe visibility is 49.37% when the FP cavity length is 341.1 μm, and 20.09% when the cavity length is 1343.3 μm. The effective range of the cavity is over 1000 μm. Strain experiment at room temperature shows the measuring range is 10037 με with relative error of 0.37% while the gauge length is 100 mm. High temperature experiment was also carried out and the result shows that the sensor can work at 1300 °C. This method is expected to be helpful for decreasing the difficulty of fabricating high fringe visibility sapphire fiber FP sensors, and increasing the measuring range.

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Sapphire Fabry-Perot high-temperature sensor study

Cited by 6 publications

References 11 publications

Fiber Optic Sensing Technology and Vision Sensing Technology for Structural Health Monitoring

Fiber Optic Sensing Technology and Vision Sensing Technology for Structural Health Monitoring

Construction of a High-Temperature Sensor for Industry Based on Optical Fibers and Ruby Crystal

Sapphire Fiber Fabry-Perot Sensors With High Fringe Visibility

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