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Review of tellurite glasses purification issues for mid‐IR optical fiber applications
Author(s) -
Désévédavy Frédéric,
Strutynski Clément,
Lemière Arnaud,
Mathey Pierre,
Gadret Grégory,
Jules JeanCharles,
Kibler Bertrand,
Smektala Frédéric
Publication year - 2020
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.17078
Subject(s) - gibbs free energy , materials science , supercontinuum , optical fiber , attenuation , infrared , fiber , optics , thermodynamics , composite material , photonic crystal fiber , physics
Abstract We reviewed the tellurite glass purification studies performed over the last 20 years, in particular dealing with the mid‐infrared (mid‐IR) transmission performances. Best results are obtained under rich O 2 atmosphere with platinum crucibles although Gibbs energy calculations show that other crucibles material are possible such as gold or alumina. From the point of view of the thermodynamics of involved oxidation reactions only, we identified the suitable conditions based on Gibbs energy calculations to be a synthesis temperature set above 900 K and a O 2 pressure around 10 5 Pa. The performances of the different purification techniques were also compared. Finally, we analyzed the tellurite fibers recently optimized for mid‐IR which present low attenuation up to 4 µm allowing supercontinuum generation up to 5 µm.