Spontaneous Raman scattering in optical fibers with modulated probe light for distributed temperature Raman remote sensing

Farahani, Mohsen; Gogolla, Torsten

doi:10.1109/50.779159

Cited by 210 publications

(123 citation statements)

References 13 publications

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“…Previous DTS investigations in hydrological or environmental applications have never presented the equations that DTS systems use for temperature estimation or temperature calibration. Few investigations in the field of light physics have derived the governing equation for temperature estimation along the fiber (Farahani and Gogolla, 1999;Yilmaz and Karlik, 2006), but their notation is inconsistent and some parameters have not been clearly defined. Therefore, temperature estimation (or calibration) in fiber-optic DTS systems still remains unclear.…”

Section: F Suárez Et Al: Assessment Of a Dts Systemmentioning

confidence: 99%

Assessment of a vertical high-resolution distributed-temperature-sensing system in a shallow thermohaline environment

Suárez

Aravena

Hausner

et al. 2011

Hydrol. Earth Syst. Sci.

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Abstract. In shallow thermohaline-driven lakes it is important to measure temperature on fine spatial and temporal scales to detect stratification or different hydrodynamic regimes. Raman spectra distributed temperature sensing (DTS) is an approach available to provide high spatial and temporal temperature resolution. A vertical high-resolution DTS system was constructed to overcome the problems of typical methods used in the past, i.e., without disturbing the water column, and with resistance to corrosive environments. This paper describes a method to quantitatively assess accuracy, precision and other limitations of DTS systems to fully utilize the capacity of this technology, with a focus on vertical high-resolution to measure temperatures in shallow thermohaline environments. It also presents a new method to manually calibrate temperatures along the optical fiber achieving significant improved resolution. The vertical highresolution DTS system is used to monitor the thermal behavior of a salt-gradient solar pond, which is an engineered shallow thermohaline system that allows collection and storage of solar energy for a long period of time. The vertical high-resolution DTS system monitors the temperature profile each 1.1 cm vertically and in time averages as small as 10 s. Temperature resolution as low as 0.035 • C is obtained when the data are collected at 5-min intervals.

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Section: F Suárez Et Al: Assessment Of a Dts Systemmentioning

confidence: 99%

Assessment of a vertical high-resolution distributed-temperature-sensing system in a shallow thermohaline environment

Suárez

Aravena

Hausner

et al. 2011

Hydrol. Earth Syst. Sci.

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show abstract

“…This is the reason why spontaneous Raman scattering is used for temperature sensing (Alahbabi et al, 2005a;b;Dakin et al, 1985;Farahani & Gogolla, 1999;Wait et al, 1997).…”

Section: Spontaneous Scatteringmentioning

confidence: 99%

“…This role can be positive as in remote optical sensing (Alahbabi et al, 2005a;b;Dakin et al, 1985;Farahani & Gogolla, 1999;Wait et al, 1997). It can also be detrimental as in fiber optics telecommunication, where spontaneous nonlinear scattering processes contribute to decrease the signal-to-noise ratio (SNR) or in supercontinuum generation, where it limits the coherence and stability of the supercontinuum (Corwin et al, 2003;Dudley et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Spontaneous Nonlinear Scattering Processes in Silica Optical Fibers

Brainis¹

2012

Recent Progress in Optical Fiber Research

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“…These attenuations are different because the Raman backscattered signals have different frequencies. The Bose-Einstein probability distribution of phonons can be described by (Farahani & Gogolla, 1999):…”

Section: Exp Expmentioning

confidence: 99%

Heat Transfer in the Environment: Development and Use of Fiber-Optic Distributed Temperature Sensing

Suárez¹,

Hausner²,

Dozier³

et al. 2011

Developments in Heat Transfer

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Spontaneous Raman scattering in optical fibers with modulated probe light for distributed temperature Raman remote sensing

Cited by 210 publications

References 13 publications

Assessment of a vertical high-resolution distributed-temperature-sensing system in a shallow thermohaline environment

Assessment of a vertical high-resolution distributed-temperature-sensing system in a shallow thermohaline environment

Spontaneous Nonlinear Scattering Processes in Silica Optical Fibers

Heat Transfer in the Environment: Development and Use of Fiber-Optic Distributed Temperature Sensing

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