002959499 001__ 2959499
002959499 003__ SzGeCERN
002959499 005__ 20260422234042.0
002959499 0247_ $$2DOI$$9IEEE$$a10.1109/JLT.2025.3650002
002959499 0248_ $$aoai:cds.cern.ch:2959499$$pcerncds:CERN
002959499 035__ $$9https://inspirehep.net/api/oai2d$$aoai:inspirehep.net:3146134$$d2026-04-21T14:07:30Z$$h2026-04-22T04:00:03Z$$mmarcxml
002959499 035__ $$9Inspire$$a3146134
002959499 041__ $$aeng
002959499 100__ $$aBerruti, Gaia Maria$$jORCID:0000-0002-4144-9301$$uSannio U.
002959499 245__ $$9IEEE$$aNeutron Radiation Response of Optical Fiber Gratings for Sensing in Harsh Environment
002959499 260__ $$c2026
002959499 300__ $$a8 p
002959499 520__ $$9IEEE$$aMonitoring in radiation-intensive environments poses major challenges for conventional sensing technologies, which often suffer from performance degradation, high maintenance demands and limited long-term stability. In this context, optical fiber (OF) sensors represent a promising alternative. However, their deployment in such applications requires a systematic qualification of their radiation response under realistic operating conditions. In this work we report on results collected during the first neutron irradiation campaign of both bare and titanium dioxide-coated UV-written Long Period Gratings (LPGs), as well as Fiber Bragg Gratings (FBGs) inscribed by UV and femtosecond laser techniques, in photosensitive B-Ge doped fibers. The LPGs were exposed to a cumulative neutron fluence of ∼3.4 × 1015 n/cm2, while the FBGs to a higher fluence of ∼8.6 × 1015 n/cm2. The spectral response of the investigated samples under neutron irradiation was analyzed with respect to wavelength shifts and visibility variations. Collected results clearly demonstrate the robustness of OF devices in neutron environments and highlight the potential of nanoscale coatings to design radiation-hardened optical sensors. Moreover, such advances enable strategies for the development of enhanced OF sensing platforms for environmental monitoring in nuclear and high-energy physics applications.
002959499 542__ $$3publication$$dIEEE$$g2025
002959499 65017 $$2SzGeCERN$$aDetectors and Experimental Techniques
002959499 6531_ $$9author$$aRadiation effects
002959499 6531_ $$9author$$aFiber gratings
002959499 6531_ $$9author$$aSensors
002959499 6531_ $$9author$$aNeutrons
002959499 6531_ $$9author$$aTemperature sensors
002959499 6531_ $$9author$$aInductors
002959499 6531_ $$9author$$aGratings
002959499 6531_ $$9author$$aOptical fiber sensors
002959499 6531_ $$9author$$aCoatings
002959499 6531_ $$9author$$aOptical fibers
002959499 6531_ $$9author$$aOptical Fiber
002959499 6531_ $$9author$$aHarsh Environments
002959499 6531_ $$9author$$aFiber Bragg Grating
002959499 6531_ $$9author$$aNeutron Irradiation
002959499 6531_ $$9author$$aOptical Grating
002959499 6531_ $$9author$$aOperating Conditions
002959499 6531_ $$9author$$aFemtosecond Laser
002959499 6531_ $$9author$$aWavelength Shift
002959499 6531_ $$9author$$aMonitoring Platform
002959499 6531_ $$9author$$aNeutron Flux
002959499 6531_ $$9author$$aReal Operating Conditions
002959499 6531_ $$9author$$aRedshift
002959499 6531_ $$9author$$aBlue Shift
002959499 6531_ $$9author$$aRadiation Exposure
002959499 6531_ $$9author$$aElectromagnetic Interference
002959499 6531_ $$9author$$aNuclear Power Plant
002959499 6531_ $$9author$$aPower Variation
002959499 6531_ $$9author$$aInscription
002959499 6531_ $$9author$$aFabrication Techniques
002959499 6531_ $$9author$$aShielding Effect
002959499 6531_ $$9author$$aResonance Wavelength
002959499 6531_ $$9author$$aResonance Wavelength Shift
002959499 6531_ $$9author$$aVisible Reduction
002959499 6531_ $$9author$$aReactor Core
002959499 6531_ $$9author$$aResonance Shift
002959499 6531_ $$9author$$aIrradiation Experiments
002959499 6531_ $$9author$$aRadiation Shielding
002959499 6531_ $$9author$$aReactor Operation
002959499 6531_ $$9author$$aRadiation Sensitivity
002959499 6531_ $$9author$$aTypes Of Radiation
002959499 6531_ $$9author$$aFBG
002959499 6531_ $$9author$$aLPG
002959499 6531_ $$9author$$ananoscale coating
002959499 6531_ $$9author$$aneutron irradiation
002959499 6531_ $$9author$$aoptical fiber sensors
002959499 6531_ $$9author$$aradiation effects
002959499 6531_ $$9author$$aradiation shielding
002959499 690C_ $$aARTICLE
002959499 690C_ $$aCERN
002959499 700__ $$aScherino, Lorenzo$$uCERN
002959499 700__ $$aVaiano, Patrizio$$jORCID:0000-0002-7874-3352$$uSannio U.
002959499 700__ $$aZuppolini, Simona$$uCNR, Italy
002959499 700__ $$aZotti, Aldobenedetto$$uCNR, Italy
002959499 700__ $$aQuero, Giuseppe$$uMolise U.
002959499 700__ $$aZarrelli, Mauro$$jORCID:0000-0002-5018-5512$$uCNR, Italy
002959499 700__ $$aBorriello, Anna$$uCNR, Italy
002959499 700__ $$aPetagna, Paolo$$jORCID:0000-0002-8674-9690$$uCERN
002959499 700__ $$aCusano, Andrea$$jORCID:0000-0002-9297-6339$$uSannio U.
002959499 700__ $$aConsales, Marco$$jORCID:0000-0002-6208-3687$$uSannio U.
002959499 773__ $$c2858-2865$$n7$$pJ. Lightwave Technol.$$v44$$y2026
002959499 960__ $$a13
002959499 980__ $$aARTICLE