Outstanding sensitivity to ionizing radiation of custom optical fibers evaluated in real time by long period gratings

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985882%3A_____%2F25%3A00648244" target="_blank" >RIV/67985882:_____/25:00648244 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1117/12.3061564" target="_blank" >https://doi.org/10.1117/12.3061564</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1117/12.3061564" target="_blank" >10.1117/12.3061564</a>

Result language
angličtina
Original language name
Outstanding sensitivity to ionizing radiation of custom optical fibers evaluated in real time by long period gratings
Original language description
In this work, we report on the gamma radiation sensitivity of different optical fibers, including a custom-designed scintillating fiber and commercially available models with different core compositions (Ge-doped, P-doped, and pure-silica). The sensitivity was comparatively investigated by monitoring the shift in the resonant wavelength of long period gratings (LPGs) inscribed in these fibers, which were exposed to a 1.8 kGy/h gamma dose rate until reaching a maximum absorbed dose of 36 kGy. The LPG period was selected to have the coupling with a high order cladding mode near 1550 nm. Additionally, post irradiation permanent effects were observed after the following two days. Real-Time measurements highlighted a significant dependence of the response on the fiber composition, with the scintillating optical fiber demonstrating one order of magnitude higher sensitivity than other fibers. By tailoring the fiber composition and grating parameters, this study aims to develop fiber-based sensors capable of precise and reliable measurements in diverse radiation-rich settings, including nuclear reactors, space exploration, and particle accelerators
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proceedings of SPIE the International Society for Optical Engineering
ISBN
9781510691872
ISSN
0277-786X
e-ISSN
1996-756X
Number of pages
4
Pages from-to
"Roč. 13639 (2025)"
Publisher name
SPIE
Place of publication
BELLINGHAM
Event location
Porto
Event date
May 25, 2025
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
001517368300310

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