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

Rizzolo, Serena; Sabatier, C.; Boukenter, Aziz; Marin, Emmanuel; Ouerdane, Y.; Cannas, Marco; Perisse, J.; Macé, Jean-Reynald; Bauer, Sebastian; Girard, Sylvain

doi:10.1109/tns.2016.2527831

Cited by 17 publications

(21 citation statements)

References 15 publications

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“…We observe that HTA, Pl and Pl&C coated fibers exhibit stable C T s as a function of radiation with variation within 1% except for the SMF-B irradiated at 3 MGy where variation is 2%. These results confirm that HTA, Pl and Pl&C are more resistant coating to both temperature and radiation constraints than DAC, for which irradiation was a factor to take in account since it introduces errors of the order of 5% in Fdoped fibers [9].…”

Section: Resultssupporting

confidence: 73%

“…Those results have revealed that OFDR is a powerful technique possessing an almost unaffected response by radiations opening the way to the development of new fiberbased systems in radiation environments. However, both in [9] and in [10] it is reported that distributed measurements can be affected by the sensor packaging (including coating, metallic tubes, bridles …) resulting in errors caused by an inaccurate calibration.…”

mentioning

confidence: 99%

“…To investigate this packaging related error sources an accurate study on double acrylate coated fibers was carried out in [9] and [11] showing that both temperature and radiation affect the temperature sensor response influencing the calibration coefficients of the fiber under test. The results showed also that a pre-thermal treatment up to 80°C and/or a pre-irradiation up to 3 MGy reduce the coating linked error on C T and C ɛ variations from 5% to 0.5% improving the performances of fiber sensors for operation in harsh environments.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Investigation of Coating Impact on OFDR Optical Remote Fiber-Based Sensors Performances for Their Integration in High Temperature and Radiation Environments

Rizzolo

Marin

Morana

et al. 2016

J. Lightwave Technol.

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Section: Resultssupporting

confidence: 73%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Investigation of Coating Impact on OFDR Optical Remote Fiber-Based Sensors Performances for Their Integration in High Temperature and Radiation Environments

Rizzolo

Marin

Morana

et al. 2016

J. Lightwave Technol.

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“…DOFS emerged with the development of a technique called optical time-domain reflectometer (OTDR). There are three main types of OTDR sensing mechanism, which are based on Brillouin [20][21][22][23][24], Rayleigh [25][26][27][28][29], and Raman scattering [30,31].…”

Section: Introductionmentioning

confidence: 99%

The Field Monitoring Experiment of the Roof Strata Movement in Coal Mining Based on DFOS

Hou

2020

Sensors

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Mining deformation of roof strata is the main cause of methane explosion, water inrush, and roof collapse accidents amid underground coal mining. To ensure the safety of coal mining, the distributed optical fiber sensor (DFOS) technology has been applied in the 150,313 working face by Yinying Coal Mine in Shanxi Province, north China to monitor the roof strata movement, so as to grasp the movement law of roof strata and make it serve for production. The optical fibers are laid out in the holes drilled through the overlying strata on the roadway roof and BOTDR technique is utilized to carry out the on-site monitoring. Prior to the on-site test, the coupling test of the fiber strain in the concrete anchorage, the calibration test of the fiber strain coefficient of the 5-mm steel strand (SS) fiber, and the test of the strain transfer performance of the SS fiber were carried out in the laboratory. The approaches for fiber laying-out in the holes and fiber's spatial positioning underground the coal mine have been optimized in the field. The indoor test results show that the high-strength SS optical fiber has a high strain transfer performance, which can be coupled with the concrete anchor with uniform deformation. This demonstrated the feasibility of SS fiber for monitoring strata movement theoretically and experimentally; and the law of roof strata fracturing and collapse is obtained from the field test results. This paper is a trial to study the whole process of dynamic movement of the deformation of roof strata. Eventually the study results will help Yinying Coal Mine to optimize mining design, prevent coal mine accidents, and provide detailed test basis for DFOS monitoring technique of roof strata movement.both ends along the long axis direction; when the two cracks increase to a certain length, cracks appear in the middle of the short axis and propagate to both ends; second, the cracks continue to expand in the long axis and the short axis directions, and are penetrated by the arc curve at four corners to form an "O-shaped" closed crack curve; finally, the "X-shaped" cracks are full of the "O-shaped" closed curve. At this time, the four sides of the fixed support plate will break into four geometrically movable rock blocks, the four rock blocks will rotate sink to the goaf like a cantilever beam. With the collapse of the broken roof strata, the broken rock blocks accumulate to be a loose rock body, the loose body then support the sinking roof strata, finally the Voussoir Beam Structure forms, which the Key Block is simplified into an arch with three articulations [1][2][3]. At present, Voussoir Beam hypothesis is widely used in China to design and guide coal mining. According to the hypothesis, the overlying strata movement of stope is divided into three zones in horizontal and vertical direction, as shown in Figure 1. The overburden of stope is divided into caving zone, fracture zone, and bending subsidence zone from bottom to top. In the advancing direction of the working face, Block A represents the Key Block ...

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“…Nevertheless, fiber packaging influences the OFDR sensor response: radiation changes the mechanical properties of the coating surrounding the fiber core/cladding and can lead to errors in strain or temperature distributed measurements. Irradiations up to 3 MGy, as well as thermal treatments up to the maximum operating temperature of this surrounding coating, have been shown to improve the performances of the sensors under harsh environments [6], [7].…”

mentioning

confidence: 99%

Evaluation of Distributed OFDR-Based Sensing Performance in Mixed Neutron/Gamma Radiation Environments

Rizzolo

Boukenter

Marin

et al. 2017

IEEE Trans. Nucl. Sci.

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We report the study of a radiation resistant single mode optical fiber doped with fluorine exposed to mixed neutron and gamma-radiation up to 10(17) n/cm(2) fluence and >2 MGy dose to evaluate its performances when used as the sensing element of a distributed Optical Frequency Domain Reflectometry (OFDR). The use of complementary spectroscopic techniques highlights some differences between the responses of solely gamma-radiation (10 MGy) or mixed neutron and. (10(17) n/cm2 + >2 MGy) irradiated samples. Those differences are linked to the defect generation rather than to structural changes of the a-SiO2 host matrix. We show that a modification of the refractive index of similar to 10(-5) is induced at the highest investigated neutron fluence. However, the feasibility of distributed temperature measurements along the irradiated fiber is demonstrated with an accuracy of 0.1 degrees C over a sensing length up to similar to 130 m with the tested OBR4600 interrogator. These results are very promising for the integration of OFDR sensors in mixed neutron and gamma radiation environments

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

Cited by 17 publications

References 15 publications

Investigation of Coating Impact on OFDR Optical Remote Fiber-Based Sensors Performances for Their Integration in High Temperature and Radiation Environments

Investigation of Coating Impact on OFDR Optical Remote Fiber-Based Sensors Performances for Their Integration in High Temperature and Radiation Environments

The Field Monitoring Experiment of the Roof Strata Movement in Coal Mining Based on DFOS

Evaluation of Distributed OFDR-Based Sensing Performance in Mixed Neutron/Gamma Radiation Environments

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