Comparison of simulated and experimental results for distributed radiation-induced absorption measurement using OFDR reflectometry

Faustov, Alexey; Gusarov, Andreï; Лиокумович, Л. Б.; Fotiadi, Andrei A.; Wuilpart, Marc; Mégret, Patrice

doi:10.1117/12.2026786

Cited by 16 publications

(11 citation statements)

References 5 publications

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“…Among the different optical fiber sensing techniques, those based on light scattering are the most investigated: from Fiber Bragg Gratings (FBGs) for discrete measurements [4] to Brillouin [5], Raman [6] [7] and Rayleigh [8] for distributed measurements. The choice of one technique with respect to the others depends on the characteristics and the sensor profile of use.…”

mentioning

confidence: 99%

Radiation Characterization of Optical Frequency Domain Reflectometry Fiber-Based Distributed Sensors

Rizzolo

Sabatier

Boukenter

et al. 2016

IEEE Trans. Nucl. Sci.

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We studied the responses of fiber-based temperature and strain sensors related to optical frequency domain reflectometry (OFDR) and exposed to high γ-ray doses up to 10 MGy. Three different commercial fiber classes are used to investigate the evolution of OFDR parameters with dose, thermal treatment and fiber core/cladding composition. We find that the fiber coating is affected by both thermal and radiation treatments and this modification results in an evolution of the internal stress distribution inside the fiber that influences its temperature and strain Rayleigh coefficients. These two environmental parameters introduce a relative error up to 5% on temperature and strain measures. This uncertainty can be reduced down to 0.5% if a prethermal treatment at 80 °C and/or a preirradiation up to 3 MGy are performed before insertion of the fiber in the harsh environment of interest. These preliminary results demonstrate that OFDR fiber-based distributed sensors look as promising devices to be integrated in radiation environments with associated large ionizing doses

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confidence: 99%

Radiation Characterization of Optical Frequency Domain Reflectometry Fiber-Based Distributed Sensors

Rizzolo

Sabatier

Boukenter

et al. 2016

IEEE Trans. Nucl. Sci.

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“…Optical fiber properties, indeed, depend on several external parameters such as temperature, strain and therefore the fiber itself can be used as the sensitive element. Different classes of fiber-based sensing techniques have been recently investigated such as Fiber Bragg Gratings (FBGs) for discrete measurements [3,4] and Brillouin [5], Raman [6,7] and Rayleigh [8,9] scattering based techniques for distributed measurements of various environmental parameters. Whereas Brillouin and Raman sensor resolutions remain in the range of one meter, the advantage of Rayleigh scattering based technique is that it offers very high spatial resolution from 1 cm down to few µm over several hundred meters of fiber length down to few meters respectively.…”

Section: Introductionmentioning

confidence: 99%

Vulnerability of OFDR-based distributed sensors to high γ-ray doses

Rizzolo¹,

Boukenter²,

Marin³

et al. 2015

Opt. Express

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Vulnerability of Optical Frequency Domain Reflectometry (OFDR) based sensors to high γ-ray doses (up to 10 MGy) is evaluated with a specific issue of a radiation-hardened temperature and strain monitoring system for nuclear industry. For this, we characterize the main radiation effects that are expected to degrade the sensor performances in such applicative domain: the radiation-induced attenuation (RIA), the possible evolution with the dose of the Rayleigh scattering phenomenon as well as its dependence on temperature and strain. This preliminary investigation is done after the irradiation and for five different optical fiber types covering the range from radiation-hardened fibers to highly radiation sensitive ones. Our results show that at these high dose levels the scattering mechanism at the basis of the used technique for the monitoring is unaffected (changes below 5%), authorizing acceptable precision on the temperature or strain measurements. RIA has to be considered as it limits the sensing range. From our vulnerability study, the OFDR sensors appear as promising candidates for nuclear industry even at doses as high as 10 MGy.

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“…Indeed, optical fibers can act as the sensing element for a large variety of external parameters such as strain, temperature and pressure. Different classes of fiber-based sensors have been investigated such as Fiber Bragg Gratings (FBGs) for discrete measurements [2] or Brillouin [3], Raman [4] and Rayleigh [5]- [6] scattering based techniques for distributed measurements.…”

Section: Introductionmentioning

confidence: 99%

Radiation Hardened Optical Frequency Domain Reflectometry Distributed Temperature Fiber-Based Sensors

Rizzolo

Marin

Boukenter

et al. 2015

IEEE Trans. Nucl. Sci.

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We study the performance of Optical Frequency Domain Reflectometry (OFDR) distributed temperature sensors using radiation resistant single-mode optical fibers. In situ experiments under 10 keV X-rays exposure up to 1 MGy(rm SiO-2) were carried out with an original setup that allows to investigate combined temperature and radiation effects on the sensors within a temperature range from 30circrm C to 250circrm C. Obtained results demonstrate that optical fiber sensors based on Rayleigh technique are almost unaffected by radiation up to the explored doses. We show that a pre-thermal treatment stabilize the sensor performance increasing the accuracy on temperature measurement from sim 5circrm C down to sim 0.5circrm C by reducing the packaging-related errors (such as ones related to coating modification) that could be introduced during the measurement. These results are very promising for the future integration of Rayleigh based sensors in nuclear facilities

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Comparison of simulated and experimental results for distributed radiation-induced absorption measurement using OFDR reflectometry

Cited by 16 publications

References 5 publications

Radiation Characterization of Optical Frequency Domain Reflectometry Fiber-Based Distributed Sensors

Radiation Characterization of Optical Frequency Domain Reflectometry Fiber-Based Distributed Sensors

Vulnerability of OFDR-based distributed sensors to high γ-ray doses

Radiation Hardened Optical Frequency Domain Reflectometry Distributed Temperature Fiber-Based Sensors

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