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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

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

Popis výsledku anglicky

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

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings of SPIE the International Society for Optical Engineering

ISBN

9781510691872

ISSN

0277-786X

e-ISSN

1996-756X

Počet stran výsledku

4

Strana od-do

"Roč. 13639 (2025)"

Název nakladatele

SPIE

Místo vydání

BELLINGHAM

Místo konání akce

Porto

Datum konání akce

25. 5. 2025

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

001517368300310