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Article Dans Une Revue Scientific Reports Année : 2023

Toward low-loss mid-infrared Ga2O3–BaO–GeO2 optical fibers

Résumé

The development of efficient and compact photonic systems in support of mid-infrared integrated optics is currently facing several challenges. To date, most mid-infrared glass-based devices are employing fluoride or chalcogenide glasses (FCGs). Although the commercialization of FCGs-based optical devices has rapidly grown during the last decade, their development is rather cumbersome due to either poor crystallization and hygroscopicity resilience or poor mechanical-thermal properties of the FCGs. To overcome these issues, the parallel development of heavy-metal oxide optical fiber from the barium-germanium-gallium oxide vitreous system (BGG) has revealed a promising alternative. However, over 30 years of fiber fabrication optimization, the final missing step of drawing BGG fibers with acceptable losses for meters-long active and passive optical devices had not yet been reached. In this article, we first identify the three most important factors that prevent the fabrication of low-loss BGG fibers i.e., surface quality, volumic striae and glass thermal-darkening. Each of the three factors is then addressed in setting up a protocol enabling the fabrication of low-loss optical fibers from galliumrich BGG glass compositions. Accordingly, to the best of our knowledge, we report the lowest losses ever measured in a BGG glass fiber i.e., down to 200 dB km −1 at 1350 nm.
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Dates et versions

hal-04038226 , version 1 (20-03-2023)

Identifiants

Citer

Théo Guérineau, Samar Aouji, Steeve Morency, Florian Calzavara, Patrick Larochelle, et al.. Toward low-loss mid-infrared Ga2O3–BaO–GeO2 optical fibers. Scientific Reports, 2023, 13, pp.3697. ⟨10.1038/s41598-023-30522-1⟩. ⟨hal-04038226⟩

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