Monitoring of gamma-irradiated Yb-doped optical fibers through the pump induced refractive index change effect

I Pekukhova,A A Fotiadi,A V Shubin,A L Tomashuk,H Thienpont,O L Antipov,P Megret,S G Novikov,K Panajotov,I O Zolotovskiy

doi:10.1109/animma.2011.6172839

Monitoring of gamma-irradiated Yb-doped optical fibers through the pump induced refractive index change effect

I Pekukhova, A A Fotiadi + Show 8 more

https://doi.org/10.1109/animma.2011.6172839

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Publication Date: Jun 1, 2011

Citations: 4

Affiliation: University of Mons, Vrije Universiteit Brussel, Fiber Optics Research Center

#Refractive Index Change Effect #Yb-doped Optical Fibers + Show 8 more

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Abstract

We report on the method for monitoring of the modifications in Yb-doped optical fibers irradiated by gamma-rays with the doses 1, 2, 4 and 8 kGy. This method is based on the refractive index change (RIC) effect induced in the tested fibers by square modulated optical pump pulses of 1 ms duration at 980 nm with the power up to 100 mW. The applied in-situ monitoring is based on interferometric technique and highlights the key parameters of the RIC effect that allows to characterize quantitatively the degree of the fiber degradation under the gamma irradiation.

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