Crystallization-induced refractive index modulation on sapphire-derived fiber for ultrahigh temperature sensing

Liu, Hao; Lin, Hong; Ma, Zhongjun; Huang, Lu; Wang, Z.; Wen, Jianxiang; Chen, Z.; Wang, T.

doi:10.1364/oe.27.006201

Cited by 17 publications

(7 citation statements)

References 33 publications

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“…The crystallization in an optical cavity can be monitored by temporal shift of cavity modes derived from the change of refractive index. 37 The temporal shift of cavity modes far from the OH stretch energy was used to estimate the crystallization rate. This is also possible for a no-mirror cavity as the water/ZnSe interface provides sufficient reflectivity to generate optical cavity modes, albeit of low Q -factor.…”

Section: Resultsmentioning

confidence: 99%

Selective crystallization via vibrational strong coupling

Hirai

Ishikawa

Chervy³

et al. 2021

Chem. Sci.

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Section: Resultsmentioning

confidence: 99%

Selective crystallization via vibrational strong coupling

Hirai

Ishikawa

Chervy³

et al. 2021

Chem. Sci.

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“…The highest temperature measurement limit of silica-based optical fiber FPI temperature sensor is 1200°C [88,89] . In order to further improve the temperature measurement limit, many scholars have proposed the FPI temperature sensor based on sapphire fiber [90][91][92] .…”

Section: Fiber Materials Fbg Type Max Stablementioning

confidence: 99%

Recent advances in optical fiber high-temperature sensors and encapsulation technique [Invited]

å¾�,

å�ž,

æ¢�

et al. 2023

Chin. Opt. Lett.

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In the aerospace field, for aerospace engines and other high-end manufacturing equipment working in extreme environments, like ultrahigh temperatures, high pressure, and high-speed airflow, in situ temperature measurement is of great importance for improving the structure design and achieving the health monitoring and the fault diagnosis of critical parts. Optical fiber sensors have the advantages of small size, easy design, corrosion resistance, anti-electromagnetic interference, and the ability to achieve distributed or quasi-distributed sensing and have broad application prospects for temperature sensing in extreme environments. In this review, first, we introduce the current research status of fiber Bragg grating-type and Fabry-Perot interferometer-type high-temperature sensors. Then we review the optical fiber hightemperature sensor encapsulation techniques, including tubular encapsulation, substrate encapsulation, and metalembedded encapsulation, and discuss the extreme environmental adaptability of different encapsulation structures. Finally, the critical technological issues that need to be solved for the application of optical fiber sensors in extreme environments are discussed.

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“…16 The sensitivity was greatly improved, but the fabrication process was complex. Liu et al implemented crystal induced RI modulation in sapphire-derived fibers and developed a F-P interferometer based on sapphire-derived fibers for ultrahigh temperature sensing, 17 but its sapphire cone cost was high. Haihu et al made an optical fiber F-P temperature sensor with a silica glass solid-core photonic crystal fiber.…”

Section: Introductionmentioning

confidence: 99%

“…Liu et al. implemented crystal induced RI modulation in sapphire-derived fibers and developed a F-P interferometer based on sapphire-derived fibers for ultrahigh temperature sensing, 17 but its sapphire cone cost was high. Haihu et al.…”

Section: Introductionmentioning

confidence: 99%

Optical fiber Fabry-Perot temperature sensor based on metal welding technology

Chen

Wang

2023

J. Nanophoton.

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We present an optical fiber Fabry-Perot (F-P) temperature sensor based on metal welding technology. The fiber sensor is composed of a single-mode fiber and a metal capillary that are encapsulated by metal welding technology. The relationship between the cavity length and sensitivity is analyzed theoretically. The experimental results show that the sensitivity of the fabricated sensor reaches 3.85 nm∕°C when the F-P cavity length is 171 μm. In addition, the sensitivity of the F-P temperature sensor increases as the cavity length of the F-P temperature sensor decreases. The proposed sensor fabricated by metal welding technology has the advantages of a high sensitivity, simple fabrication, simple structure, and low cost.

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Crystallization-induced refractive index modulation on sapphire-derived fiber for ultrahigh temperature sensing

Cited by 17 publications

References 33 publications

Selective crystallization via vibrational strong coupling

Selective crystallization via vibrational strong coupling

Recent advances in optical fiber high-temperature sensors and encapsulation technique [Invited]

Optical fiber Fabry-Perot temperature sensor based on metal welding technology

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