0586774 - ÚFE 2025 RIV US eng J - Journal Article
Pokorný, Jan - Aubrecht, Jan - Kamrádek, Michal - Švejkarová, Bára - Vařák, Petr - Grábner, Martin - Peterka, Pavel
Depressed-cladding thulium-doped fiber for applications below 1800 nm.
Optics Express. Roč. 32, č. 10 (2024), s. 17966-17976. ISSN 1094-4087
R&D Projects: GA MŠMT(CZ) EH22_008/0004573
Institutional support: RVO:67985882
Keywords : short wavelength operation * amplifiers * emission * losses * laser * gain
OECD category: Optics (including laser optics and quantum optics)
Impact factor: 3.2, year: 2023 ; AIS: 0.723, rok: 2023
Method of publishing: Open access
Result website:
https://opg.optica.org/directpdfaccess/635f4a9a-1ef1-44c4-889807f3c4621d85_549524/oe-32-10-17966.pdf?da=1&id=549524&seq=0&mobile=no

DOI: https://doi.org/10.1364/OE.523168

We present a thuliumdoped silica fiber, featuring a depressed cladding, for applications at wavelengths below 1800 nm. The depressed cladding is used as a distributed filter suppressing amplified spontaneous emission at longer wavelengths, which helps promote emission at shorter wavelengths. We describe the fiber design process that was carried out by using a combination of numerical methods. The fiber was prepared in-house by a combination of the standard modified chemical vapor deposition method and nanoparticle doping. We demonstrate the effectiveness and tunability of ASE filtering, which is influenced by fiber bend radius and its variation. (c) 2024 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
Permanent Link: https://hdl.handle.net/11104/0360445