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

• Autorzy: Grábner Martin , Peterka Pavel , Honzátko Pavel

Identyfikatory

DOI

10.24425/opelre.2021.139482

• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

high-power fibre lasers; active optical fibres; temperature distribution; heat transfer

• Wydawca: Stowarzyszenie Elektryków Polskich ; Polska Akademia Nauk ; Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
• Czasopismo: Opto-Electronics Review
• Rocznik: 2021
• Tom: Vol. 29, No. 4
• Strony: 126--132
• Opis fizyczny: Bibliogr. 30 poz., rys., wykr.

Twórcy

autor

Grábner Martin

• Department of Fiber Lasers and Nonlinear Optics, Institute of Photonics and Electronics, Czech Academy of Sciences, 1014/57 Chaberská St., 18251 Praha 8, Czech Republic

• https://orcid.org/https%3A//orcid.org/0000-0003-1399-094X+

autor

Peterka Pavel

• Department of Fiber Lasers and Nonlinear Optics, Institute of Photonics and Electronics, Czech Academy of Sciences, 1014/57 Chaberská St., 18251 Praha 8, Czech Republic

• https://orcid.org/https%3A//orcid.org/0000-0002-6341-7589+

autor

Honzátko Pavel

• Department of Fiber Lasers and Nonlinear Optics, Institute of Photonics and Electronics, Czech Academy of Sciences, 1014/57 Chaberská St., 18251 Praha 8, Czech Republic

• https://orcid.org/https%3A//orcid.org/0000-0003-4649-4790+

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