Formula for temperature distribution in multi-layer optical fibres for high-power fibre lasers

0553143 - ÚFE 2022 RIV PL eng J - Článek v odborném periodiku
Grábner, Martin - Peterka, Pavel - Honzátko, Pavel
Formula for temperature distribution in multi-layer optical fibres for high-power fibre lasers.
Opto-Electronics Review. Roč. 29, č. 4 (2021), s. 126-132. ISSN 1230-3402. E-ISSN 1896-3757
Grant CEP: GA ČR(CZ) GA19-03141S
Institucionální podpora: RVO:67985882
Klíčová slova: High-power fibre lasers * Active optical fibres * Temperature distribution * Heat transfer
Obor OECD: Optics (including laser optics and quantum optics)
Impakt faktor: 2.227, rok: 2021
Způsob publikování: Omezený přístup
https://doi.org/10.24425/opelre.2021.139482

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
Trvalý link: http://hdl.handle.net/11104/0328149