Evaluation of Fiber Optic Raman Scattering Distributed Temperature Sensor Between –196 and 400 °C

Silva, Marianne Stely Peixoto e; Barros, Thales Henrique Castro de; Alves, Henrique Patriota; Nascimento, Jehan Fonsêca do; Martins-Filho, Joaquim F.

doi:10.1109/jsen.2020.3016322

Cited by 30 publications

(8 citation statements)

References 22 publications

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“…Replacing a large number of point-type fire detectors with a temperature-sensing optical fiber to detect the distributed fire greatly reduces the number of components of the fire detection system, fully improves system reliability and effectively extends the system’s trouble-free time. The optical cables employed in Raman distributed optical fiber sensing can detect temperatures of 450 °C, and can even reach as high as 1000 °C when special sensing fiber is used 142 , since, the measurement range is determined by the sensing fiber characteristics 143 . Table 10 presents the effective range of temperature measurement of some special optical cables.…”

Section: Applicationsmentioning

confidence: 99%

Physics and applications of Raman distributed optical fiber sensing

Zhang

2022

Light Sci Appl

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Raman distributed optical fiber sensing has been demonstrated to be a mature and versatile scheme that presents great flexibility and effectivity for the distributed temperature measurement of a wide range of engineering applications over other established techniques. The past decades have witnessed its rapid development and extensive applicability ranging from scientific researches to industrial manufacturing. However, there are four theoretical or technical bottlenecks in traditional Raman distributed optical fiber sensing: (i) The difference in the Raman optical attenuation, a low signal-to-noise ratio (SNR) of the system and the fixed error of the Raman demodulation equation restrict the temperature measurement accuracy of the system. {ii) The sensing distance and spatial resolution cannot be reconciled. (iii) There is a contradiction between the SNR and measurement time of the system. (iv) Raman distributed optical fiber sensing cannot perform dual-parameter detection. Based on the above theoretical and technical bottlenecks, advances in performance enhancements and typical applications of Raman distributed optical fiber sensing are reviewed in this paper. Integration of this optical system technology with knowledge based, that is, demodulation technology etc. can further the performance and accuracy of these systems.

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Section: Applicationsmentioning

confidence: 99%

Physics and applications of Raman distributed optical fiber sensing

Zhang

2022

Light Sci Appl

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“…For conventional temperature zones, Raman scattering OTDR technology has been widely applied in fields such as oil and gas storage and transportation, fire monitoring, and electric power system monitoring. However, in deep cryogenic environments, a series of challenges still exist [11,12]. For instance, the thermal stress generated by significant temperature changes in the fiber leads to an increase in signal attenuation; the reduction of molecular thermal motion at low temperatures weakens the Raman scattering light signal, causing a rapid decline in the signalto-noise ratio and consequently significant measurement errors.…”

Section: Introductionmentioning

confidence: 99%

Performance evaluation of Raman scattering-based distributed optical fiber temperature sensing system in cryogenic environment

Yang,

Tao,

Guo

et al. 2023

AOPC 2023: Optic Fiber Gyro

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Raman scattering distributed fiber optic temperature sensing technology has been widely used in many fields such as oil and gas transportation, public buildings, and fire monitoring of electrical equipment. However, the measurement performance of this technology is influenced by various factors at extremely low temperatures. In this study, a low-temperature experimental platform was independently built, and a 30-meter fiber optic was wound on a cryogenic cold head. The Raman scattering distributed fiber optic temperature sensing equipment was used to compare with the Cernox temperature sensor, and the low-temperature sensing performance of the fiber optic in the range of 5K to room temperature was examined. The experimental results showed that within a certain temperature range (room temperature to 65K), the system could provide accurate distributed temperature measurement. However, at low temperatures (65K to 5K), the increase in fiber optic stress and the decrease in Raman scattering intensity led to a reduction in signal-to-noise ratio, resulting in a sharp increase in measurement error and a significant impact on the measurement validity of the system. This study provides useful references and insights to further improve the measurement accuracy and stability of the Raman scattering distributed temperature sensing system at extremely low temperatures.

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“…The standard equipment used in these environments may exhibit critical drawbacks [ 7 , 8 ] and, therefore, researchers have been looking for the intrinsic advantages of using optical fiber sensors [ 9 , 10 ]. Recently, different approaches have been tested ranging from distributed sensing, based on Raman, Rayleigh and Brillouin backscattering, to the use of interferometric and other wavelength-selective devices [ 11 , 12 , 13 ]. Nevertheless, fiber Bragg gratings (FBGs) have been the most explored, despite showing low-temperature sensitivity below 100 K [ 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

High Sensitivity Cryogenic Temperature Sensors Based on Arc-Induced Long-Period Fiber Gratings

Иванов

Caldas

Rego

2022

Sensors

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In this paper, we investigated the evolution of the dispersion curves of long-period fiber gratings (LPFGs) from room temperature down to 0 K. We considered gratings arc-induced in the SMF28 fiber and in two B/Ge co-doped fibers. Computer simulations were performed based on previously published experimental data. We found that the dispersion curves belonging to the lowest-order cladding modes are the most affected by the temperature changes, but those changes are minute when considering cladding modes with dispersion turning points (DTP) in the telecommunication windows. The temperature sensitivity is higher for gratings inscribed in the B/Ge co-doped fibers near DTP and the optimum grating period can be chosen at room temperature. A temperature sensitivity as high as −850 pm/K can be obtained in the 100–200 K temperature range, while a value of −170 pm/K is reachable at 20 K.

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Evaluation of Fiber Optic Raman Scattering Distributed Temperature Sensor Between –196 and 400 °C

Cited by 30 publications

References 22 publications

Physics and applications of Raman distributed optical fiber sensing

Physics and applications of Raman distributed optical fiber sensing

Performance evaluation of Raman scattering-based distributed optical fiber temperature sensing system in cryogenic environment

High Sensitivity Cryogenic Temperature Sensors Based on Arc-Induced Long-Period Fiber Gratings

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