Radiation hard humidity sensors for high energy physics applications using polyimide-coated fiber Bragg gratings sensors

Berruti, Gaia Maria; Consales, M.; Giordano, M.; Sansone, Lucia; Petagna, P.; Buontempo, S.; Breglio, G.; Cusano, A.

doi:10.1016/j.snb.2012.10.047

Cited by 111 publications

(66 citation statements)

References 24 publications

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“…Optical fibers can act also as a sensing element for various external parameters. Fiber-based systems have been exploited for strain [2], temperature [3] or humidity [4] sensing in radiation environments. Various fiber sensing schemes are being investigated, including distributed Rayleigh [3,5], Raman [6] or Brillouin [7] scattering techniques and fiber Bragg gratings or interferometric sensors [8,9].…”

Section: Introductionmentioning

confidence: 99%

Effects of gamma radiation on perfluorinated polymer optical fibers

et al. 2016

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Section: Introductionmentioning

confidence: 99%

Effects of gamma radiation on perfluorinated polymer optical fibers

et al. 2016

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“…In addition, the effects induced by the sensor's exposure to 1 Mrad have been also studied (post irradiation stage). To analyse the performance of the fabricated probe, the same flexible apparatus described in [6] has been used. The LPG1 transmission spectra during the experiments were monitored by using a compact LPG interrogator, with a measurement range from 1510 nm to 1590 nm and 1 pm wavelength resolution.…”

Section: Resultsmentioning

confidence: 99%

“…In particular, Fiber Bragg Grating (FBG) sensors attracted the attention of many researchers in the last years [4] [5] [6] due to their advantages [7]. Our previous investigations at CERN concerning the use of poly-coated FBGs for RH measurements pointed out some limitations of this technology (as the influence of the coating adhesion on the performances, low RH sensitivity, T cross-sensitivities to be taken in account) [6]. Alternatively, coated long period gratings (LPGs) were proposed for RH monitoring to overcome these limitations [9] [10].…”

Section: Introductionmentioning

confidence: 99%

Radiation tolerant humidity sensors based on nano-scale TiO<inf>2</inf>-coated LPGs for high-energy physics applications

Berruti

Consales

Borriello³

et al. 2014

2014 Third Mediterranean Photonics Conference

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This contribution deals with a feasibility analysis for the development of radiation tolerant fiber optic humidity sensors based on long period grating (LPG) technology to be applied in high-energy physics (HEP) experiments currently running at the European Organization for Nuclear Research (CERN). Here we propose a highsensitivity LPG sensor coated with a finely tuned titanium dioxide (TiO2) thin layer (~100 nm thick) for relative humidity (RH) monitoring in the humidity range [0-75]%RH and in the temperature range [-10°C, 25]°C. Experimental results demonstrate the very high RH sensitivities of the proposed device (up to 1.4 nm/%RH at low humidity). The TiO2-coated LPG sensor radiation tolerance is also investigated up to 1Mrad -ionizing radiation dose. Collected results demonstrate the strong potentialities of the proposed technology in light of its future exploitation in HEP applications.

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“…Since the advantages of fiber optic sensors involving FBGs and LPGs in high-energy applications are appealing [52] [53], enabling the fabrication of in-fiber gratings in F-doped fibers represents a fundamental step for further success of fiber optic sensing technology.…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of Long-Period Gratings Written in Standard and Fluorine-Doped Fibers by Electric Arc Discharge

et al. 2016

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In this paper, we present a comparative study of long-period gratings (LPGs) written in the standard Ge-doped fiber and in two different fluorine-doped fibers by means of the electric arc discharge (EAD)-based technique. Concerning Ge-doped fibers, we present an assessment of the EAD procedure by fabricating relatively short LPGs with deep attenuation bands (up to 32 dB) and trivial power losses. We also demonstrate the ability to manage the effect of the single EAD perturbation to select grating length, which in turn acts on the bandwidth of attenuation bands, without compromising depth. Furthermore, for the first time, we produced LPGs in F-doped fibers with attenuation bands deeper than 30 dB, demonstrating the dependence of the spectra on the grating period. Finally, we illustrate a comparative experimental study on the sensitivity of LPGs fabricated in the standard and F-doped fibers with surrounding refractive index (SRI) and temperature changes. We proved that the SRI response of LPGs in F-doped fibers is significantly higher than in the standard fiber and it strongly depends on the type of F-doped fiber considered. LPGs written in F-doped fibers exhibit a slightly lower temperature sensitivity (in the range 20-30 pm/°C for λres2 cladding mode) than the LPG in the standard fiber (45 pm/°C)

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Radiation hard humidity sensors for high energy physics applications using polyimide-coated fiber Bragg gratings sensors

Cited by 111 publications

References 24 publications

Effects of gamma radiation on perfluorinated polymer optical fibers

Effects of gamma radiation on perfluorinated polymer optical fibers

Radiation tolerant humidity sensors based on nano-scale TiO<inf>2</inf>-coated LPGs for high-energy physics applications

Comparative Study of Long-Period Gratings Written in Standard and Fluorine-Doped Fibers by Electric Arc Discharge

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