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Keywords = phosphorosilicate glass

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12 pages, 4371 KB  
Communication
Refractive Index of Aluminophosphosilicate Glass in Optical Fibers near AlPO4 Join
by Mikhail E. Likhachev, Tatiana S. Zaushitsyna, Vitaliya A. Agakhanova, Svetlana S. Aleshkina, Mikhail M. Bubnov, Alexey S. Lobanov, Denis I. Oleinik and Denis S. Lipatov
Photonics 2025, 12(1), 20; https://doi.org/10.3390/photonics12010020 - 29 Dec 2024
Cited by 6 | Viewed by 2001
Abstract
The minimum refractive index of the aluminophosphosilicate (APS) core in optical fibers has been determined for a wide range of phosphorous and aluminum concentrations. It was found that the APS core refractive index became higher by ~0.0005–0.0012 as compared to that in optical [...] Read more.
The minimum refractive index of the aluminophosphosilicate (APS) core in optical fibers has been determined for a wide range of phosphorous and aluminum concentrations. It was found that the APS core refractive index became higher by ~0.0005–0.0012 as compared to that in optical fiber preform. The analysis of the measured data has shown that at least 0.2 mol.% of Al2O3 and P2O5 remain in their ordinary form near their equimolar concentrations and do not form an AlPO4 join (the effect observed for all concentrations of AlPO4 join from 5 to 25 mol.%). Full article
(This article belongs to the Special Issue Photonic Crystals: Physics and Devices, 2nd Edition)
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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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