Extraordinary Gamma Radiation Sensitivity of Long-Period Gratings Inscribed in Lutetium Aluminum Garnet-Doped Optical Fiber

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985882%3A_____%2F25%3A00643374" target="_blank" >RIV/67985882:_____/25:00643374 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1109/JSEN.2025.3615630" target="_blank" >https://doi.org/10.1109/JSEN.2025.3615630</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/JSEN.2025.3615630" target="_blank" >10.1109/JSEN.2025.3615630</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Extraordinary Gamma Radiation Sensitivity of Long-Period Gratings Inscribed in Lutetium Aluminum Garnet-Doped Optical Fiber

Popis výsledku v původním jazyce

In this work, we present the first experimental evidence of gamma radiation effects in a scintillating optical fiber featuring a core doped with lutetium and aluminum (LuAG), as well as cerium. These effects are related to fiber radiation-induced refractive index change (RIRIC) at infrared (IR) wavelengths, an aspect not typically examined in these fibers, and have been explored using long-period grating (LPG) as a highly sensitive probe. The fiber was fabricated using a modified chemical vapor deposition (MCVD) technique combined with nanocrystal doping. During exposure to gamma irradiation at a dose rate of 1.8 kGy/h and a total dose up to 4.5 kGy, the LPG resonance wavelength was monitored in real time. Remarkably, the LPG resonance wavelength exhibited a shift of up to 50 nm, far exceeding the response observed in conventional Ge-doped fibers while maintaining negligible radiation-induced attenuation (RIA). Post-irradiation analysis also revealed the persistence of the effects, suggesting a stable radiation-induced modification. The findings offer new insights into the design of high-sensitivity, radiation-responsive photonic components, with strong potential for applications in harsh environment sensing, nuclear monitoring, and radiation protection systems

Název v anglickém jazyce

Extraordinary Gamma Radiation Sensitivity of Long-Period Gratings Inscribed in Lutetium Aluminum Garnet-Doped Optical Fiber

Popis výsledku anglicky

In this work, we present the first experimental evidence of gamma radiation effects in a scintillating optical fiber featuring a core doped with lutetium and aluminum (LuAG), as well as cerium. These effects are related to fiber radiation-induced refractive index change (RIRIC) at infrared (IR) wavelengths, an aspect not typically examined in these fibers, and have been explored using long-period grating (LPG) as a highly sensitive probe. The fiber was fabricated using a modified chemical vapor deposition (MCVD) technique combined with nanocrystal doping. During exposure to gamma irradiation at a dose rate of 1.8 kGy/h and a total dose up to 4.5 kGy, the LPG resonance wavelength was monitored in real time. Remarkably, the LPG resonance wavelength exhibited a shift of up to 50 nm, far exceeding the response observed in conventional Ge-doped fibers while maintaining negligible radiation-induced attenuation (RIA). Post-irradiation analysis also revealed the persistence of the effects, suggesting a stable radiation-induced modification. The findings offer new insights into the design of high-sensitivity, radiation-responsive photonic components, with strong potential for applications in harsh environment sensing, nuclear monitoring, and radiation protection systems

Druh

J_imp - Článek v periodiku v databázi Web of Science

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 periodika

IEEE Sensors Journal

ISSN

1530-437X

e-ISSN

1558-1748

Svazek periodika

25

Číslo periodika v rámci svazku

22

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

6

Strana od-do

41367-41372

Kód UT WoS článku

001626466300005

EID výsledku v databázi Scopus

2-s2.0-105018817440