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Formula for temperature distribution in multi-layer optical fibres for high-power fibre lasers
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SYSNO ASEP 0553143 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Formula for temperature distribution in multi-layer optical fibres for high-power fibre lasers Author(s) Grábner, Martin (URE-Y)
Peterka, Pavel (URE-Y) RID
Honzátko, Pavel (URE-Y) RIDNumber of authors 3 Source Title Opto-Electronics Review. - : Polska Akademia Nauk - ISSN 1230-3402
Roč. 29, č. 4 (2021), s. 126-132Number of pages 7 s. Publication form Print - P Language eng - English Country PL - Poland Keywords High-power fibre lasers ; Active optical fibres ; Temperature distribution ; Heat transfer Subject RIV BH - Optics, Masers, Lasers OECD category Optics (including laser optics and quantum optics) R&D Projects GA19-03141S GA ČR - Czech Science Foundation (CSF) Method of publishing Limited access Institutional support URE-Y - RVO:67985882 UT WOS 000721598100003 DOI 10.24425/opelre.2021.139482 Annotation High power fibre lasers need to be cooled efficiently to avoid their thermal damage. Temperature distribution in fibre should be estimated during the fibre laser design process. The steady-state heat equation in a cylindrical geometry is solved to derive a practical formula for temperature radial distribution in multi-layered optical fibres with arbitrary number of the layers. The heat source is located in one or more cylindrical domains. The validity of the analytical formula is tested by comparison with static heat transfer simulations of typical application examples including octagonal double clad fibre, air-clad fibre, fibre with nonuniform, microstructured core. The accuracy sufficient for practical use is reported even for cases with not exactly cylindrical domains Workplace Institute of Radio Engineering and Electronics Contact Petr Vacek, vacek@ufe.cz, Tel.: 266 773 413, 266 773 438, 266 773 488 Year of Publishing 2022 Electronic address https://doi.org/10.24425/opelre.2021.139482
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