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Keywords = phosphoroaluminosilicate glass

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10 pages, 4105 KB  
Article
Refractivity of P2O5-Al2O3-SiO2 Glass in Optical Fibers
by Mikhail E. Likhachev, Tatiana S. Zaushitsyna, Vitaliya A. Agakhanova, Liudmila D. Iskhakova, Svetlana S. Aleshkina, Mikhail M. Bubnov, Alexey S. Lobanov and Denis S. Lipatov
Photonics 2023, 10(12), 1383; https://doi.org/10.3390/photonics10121383 - 15 Dec 2023
Cited by 7 | Viewed by 2804
Abstract
A significant change in the refractive index profiles for the large mode area phosphoroaluminosilicate (PAS) core optical fibers was observed in comparison to that in preforms. This study shows that the refractive index of the PAS core can vary from negative (in preform) [...] Read more.
A significant change in the refractive index profiles for the large mode area phosphoroaluminosilicate (PAS) core optical fibers was observed in comparison to that in preforms. This study shows that the refractive index of the PAS core can vary from negative (in preform) to positive (in fiber), and the difference in the refractive index between the core and preform can exceed a few thousand. By measuring a large set of fibers with different concentrations of P2O5 and Al2O3, we define the refractivity of each dopant (P2O5, Al2O3 and AlPO4 joint) after drawing fiber from the preform and discuss the possible origin of the observed refractive index variation. Full article
(This article belongs to the Special Issue Technologies and Applications of Large Core Optical Fibers)
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