Temperature, Refractive Index, and Corrosion Simultaneous Monitoring Using Raman Anti-Stokes Reflectometric Optical Fiber Sensor

Silva, Marianne Stely Peixoto e; Alves, Henrique Patriota; Oliveira, Hebio J. B.; Leão, Luis Henrique Vilela; Nascimento, Jehan Fonsêca do; Martins-Filho, Joaquim F.

doi:10.1109/tim.2023.3277928

Cited by 3 publications

(3 citation statements)

References 30 publications

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“…A fiber front end with a length of approximately 100 m was chosen, and a thermometer was adopted to measure the temperature value for reference. Thus, the calibration data P a (L c , T c ) can be described as Formula (11).…”

Section: The Optimized Raman Anti-stokes Light-based Demodulation Met...mentioning

confidence: 99%

“…It can be seen from Figure 3 that the DR is approximately 24 dB and the fiber attenuation coefficient is 0.703 dB/km. The fiber attenuation coefficient corresponds to the factor (α R + α a ) in formula (11). It consists of two processes: the first is the attenuation of the light pulse propagation, which corresponds to the Rayleigh light attenuation coefficient α R as the wavelength of the pulse light is the same with Rayleigh light; and the second is the Raman anti-Stokes light back-propagation, which relates to the attenuation coefficient of the Raman anti-Stokes light α a .…”

Section: Experimental Set-upmentioning

confidence: 99%

“…This optical time domain reflecting technology is called LiDAR (light detection and ranging) [6]. Amongst these, Raman optical time domain reflectometry (OTDR) is widely used for temperature measurement in power cable hot spot monitoring [7], partial discharge detection in voltage transformers [8], the early warning of fire in oil or gas pipe lines [9][10][11][12], etc. As the Raman scattering light is only sensitive to the temperature detected by the FUT, it is relatively simple to demodulate the temperature information compared to the Rayleigh light or the Brillouin light-based schemes, which are sensitive to both temperature and strain [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

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A Novel Distributed Optical Fiber Temperature Sensor Based on Raman anti-Stokes Scattering Light

Lu,

Wang,

Liang

et al. 2023

Applied Sciences

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In this paper, a novel distributed optical fiber temperature sensor based on Raman anti-Stokes scattering light is proposed and experimentally demonstrated. The Raman anti-Stokes scattering light is sensitive to temperature parameters that are detected by the fiber under test conditions (FUT), and this allowed the temperature demodulation algorithm to be obtained through the relationship between the temperature and the power of the back-scattered Raman anti-Stokes light. In addition, we propose a new temperature calibration method to ensure accurate temperature measurement, which is greatly affected by the stability of a pulse laser. The experimental system is constructed with an optical fiber length of approximately 3.5 km. The proposed system obtains a 24 dB dynamic range with a pulse width of 20 ns and temperature testing ranges of 30.0 °C to 80.0 °C. The results demonstrate that the maximum temperature deviation range is −1.5 °C to +1.6 °C and the root mean square (RMS) error of the whole temperature range is 0.3 °C, which means it has the potential for practical engineering applications. More importantly, it avoids the walk-off effect that must be corrected in commonly used temperature demodulation schemes adopting both Raman Stokes light and anti-Stokes light. It also saves a signal channel, which is more suitable for the integration of hybrid distributed optical fiber sensing systems for multi-parameter monitoring.

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Section: The Optimized Raman Anti-stokes Light-based Demodulation Met...mentioning

confidence: 99%

Section: Experimental Set-upmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Novel Distributed Optical Fiber Temperature Sensor Based on Raman anti-Stokes Scattering Light

Lu,

Wang,

Liang

et al. 2023

Applied Sciences

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Inclination Measurement Adopting Raman Distributed Temperature Sensor

Yao,

Lin,

Chen

et al. 2023

IEEE Sensors J.

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Involvement of free-space optics in Raman distributed temperature sensing

Yao,

Manie,

Chen

et al. 2023

Opt. Lett.

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This Letter demonstrates the successful use of free-space optics (FSO) as a transition channel for an air segment in transmitting Raman backscattering signals for distributed temperature sensing (DTS). A barrier-free air segment link shaped by an FSO is part of the Raman-based DTS (RDTS) fiber optic transmission route. For this plan, the FSO enables delivery of the RDTS’s pulse with the low-loss transmission over the air segment while also returning to the RDTS the varied Raman backscattered signals from the probing temperature variations for signal interpretation. The difference between various temperatures sensed and the referential air temperature remains nearly the same before and after passing the FSO. The viability of this technology provides a crucial basis for tackling the high expense of installing and repairing DTS cables and the challenges associated with doing so owing to topographical restrictions.

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Temperature, Refractive Index, and Corrosion Simultaneous Monitoring Using Raman Anti-Stokes Reflectometric Optical Fiber Sensor

Cited by 3 publications

References 30 publications

A Novel Distributed Optical Fiber Temperature Sensor Based on Raman anti-Stokes Scattering Light

A Novel Distributed Optical Fiber Temperature Sensor Based on Raman anti-Stokes Scattering Light

Inclination Measurement Adopting Raman Distributed Temperature Sensor

Involvement of free-space optics in Raman distributed temperature sensing

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