Hydrogen and radiation induced effects on performances of Raman fiber-based temperature sensors

Cangialosi, C.; Ouerdane, Y.; Girard, Sylvain; Boukenter, Aziz; Cannas, Marco; Delépine-Lesoille, Sylvie; Bertrand, Johan; Paillet, Philippe

doi:10.1117/12.2059628

Cited by 7 publications

(12 citation statements)

References 3 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.…”

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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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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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“…In conclusion, obtained results show that OFDR-based sensors exploiting MOF fibers are not affected by radiationinduced errors as it is the case of FBGs, Brillouin, Raman sensors. It is known in literature that for FBGs with the radiation induces a Bragg Wavelength Shift (BWS) that depends on fiber composition [3], Brillouin sensors are affected by radiation with the Radiation Induced Brillouin Frequency Shifts (RI-BFS) [4] and Raman sensors by the Δα affecting the ratio between Stokes and Anti-Stokes wavelengths [5], [6]. For OFDR measurements instead we find that temperature profiles are well determined in both samples with variation from thermocouple reference data giving an error on distributed temperature measurement of ~0.3 °C.…”

Section: Discussionmentioning

confidence: 99%

“…In particular, X. Phéron et al [4] reported that Brillouin based sensors are affected by radiation because it induces an additional Brillouin frequency shift (BFS) that affects temperature and strain measurements. On the other hand, Radiation Induced Attenuation (RIA) degrades the response of Raman temperature based sensors by degrading differently the Stokes and Anti-Stokes signals [5], [6]. OFDR is one of the most promising techniques since it offers the best spatial resolution of few µm over 70 m of fiber length [9].…”

Section: Introductionmentioning

confidence: 99%

Optical Frequency Domain Reflectometer Distributed Sensing Using Microstructured Pure Silica Optical Fibers Under Radiations

Rizzolo

Boukenter

Allanche

et al. 2016

IEEE Trans. Nucl. Sci.

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We investigated the capability of microstructured optical fibers to develop multi-functional, remotely-controlled, Optical Frequency Domain Reflectometry (OFDR) distributed fiber based sensors to monitor temperature in nuclear power plants or high energy physics facilities. As pure-silica-core fibers are amongst the most radiation resistant waveguides, we characterized the response of two fibers with the same microstructure, one possessing a core elaborated with F300 Heraeus rod representing the state-of-the art for such fiber technology and one innovative sample based on pure sol-gel silica. Our measurements reveal that the Xray radiations do not affect the capacity of the OFDR sensing using these fibers to monitor the temperature up to 1 MGy dose whereas the sensing distance remains affected by RIA phenomena.

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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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Hydrogen and radiation induced effects on performances of Raman fiber-based temperature sensors

Cited by 7 publications

References 3 publications

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

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

Optical Frequency Domain Reflectometer Distributed Sensing Using Microstructured Pure Silica Optical Fibers Under Radiations

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

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