| DOI | Resolve DOI: https://doi.org/10.1109/RADECS50773.2020.9857691 |
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| Author | Search for: Blanchet, T.; Search for: Morana, A.; Search for: Marin, E.; Search for: Ouerdane, Y.; Search for: Boukenter, A.; Search for: Hnatovsky, C.1; Search for: Lu, P.1; Search for: Mihailov, S.1; Search for: Girard, S. |
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| Affiliation | - National Research Council Canada. Security and Disruptive Technologies
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| Format | Text, Article |
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| Conference | 2020 20th European Conference on Radiation and Its Effects on Components and Systems (RADECS), October 19 - November 20, 2020, Toulouse, France |
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| Subject | fiber bragg grating; fiber random grating; optical fiber sensors; x-rays; irradiation; temperature sensors; optical fiber sensors; X-rays; fiber gratings; gratings; time factors; thermal stability |
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| Abstract | Fiber Bragg Gratings (FBGs) present numerous advantages for strain or temperature monitoring as the multiplexing ability or the high acquisition rate of interrogators. However, one FBG of the usual types cannot discriminate between temperature and strain. The new Fiber Random Gratings (FRG) present a large spectrum as opposite to the usual Bragg peak and the whole spectrum shifts varying the temperature or strain. By separating this large spectral band into smaller domains and by monitoring the response of each domain to temperature and strain, discriminating the temperature and strain contributions becomes feasible with a unique sensor. In this abstract, we study for the first time the radiation response of a type I FRG inscribed into a Ge-doped fiber with a fs-laser. Its thermal stability was checked by performing 3 cycles between 20∘C and 60∘C with 2 hours lasting step of 10∘C . This grating was irradiated at room temperature (RT) under X-rays, at a dose rate of 1 Gy(SiO₂)/s up to the dose of 225 kGy. We observed a spectrum shift of approximatively 15 pm, independently of the spectral region, at the maximal dose, which represents an error of ∼1∘C if the grating is used as a temperature sensor. The responses of several other RFBGs inscribed in different conditions will be added for the conference and final paper. |
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| Publication date | 2020-10-19 |
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| Publisher | IEEE |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 3dc04a24-cd28-4733-a6a8-c5174bf8922d |
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| Record created | 2022-10-26 |
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| Record modified | 2022-10-27 |
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