Fiber loop ring-down temperature sensor using frequency-shifted interferometry technology

Chen, J. X.; Ou, Yiwen; Chen, W. J.; Li, M. M.; Li, Fang

doi:10.1007/s12596-021-00715-w

J Opt

2021

DOI: 10.1007/s12596-021-00715-w

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Fiber loop ring-down temperature sensor using frequency-shifted interferometry technology

J. X. Chen

Yiwen Ou

W. J. Chen

et al.

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2024

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A novel single mode fiber optic temperature sensor combined with the FLRDS technique

Kaya

2024

Phys. Scr.

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A single mode optical fiber loop was employed as a temperature sensor to observe changes in optical loss regarding to ringdown time (RDT) by high sensitive the fiber loop ringdown spectroscopy (FLRDS) technique which has real-time and fast response measurement capability due to allowing trapped light pulse multiple interactions with the measurands. Two different fiber loops of 455 m and 1205 m lengths were embedded one by one into a copper, circular and closed housing. Continuous monitoring of RDTs was carried out by changing the temperature in the range of 25-200 ℃ with the steps of 25 ℃ for the first time by using bare fiber without any modification as a temperature sensor. The FLRDS system for temperature sensing has simple design without extra components such as an optical time domain reflectometer (OTDR), long-period fiber grating (LPFG) or fiber Bragg grating (FBG) as sensorhead. The FLRDS system was diligently optimized to achieve the lowest baseline as %0.49. Since the RDT of the FLRDS system was changed due to the thermal expansion of the fiber, continuous monitoring of the temperature was the first time recorded by utilizing this kind of FLRDS temperature sensor. These kind of FLRDS temperature sensors have high potential to be employed in mining, nuclear facilities, railways, underwater structures, biomedical, medicine, structural health monitoring, transportation and communication applications with simple system setup, lower cost, higher sensitivity, portability, real-time and continuous monitoring for early detection.

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A novel single mode fiber optic temperature sensor combined with the FLRDS technique

Kaya

2024

Phys. Scr.

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Fiber loop ring-down temperature sensor using frequency-shifted interferometry technology

Cited by 1 publication

References 20 publications

A novel single mode fiber optic temperature sensor combined with the FLRDS technique

A novel single mode fiber optic temperature sensor combined with the FLRDS technique

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