{"title":"Formula for temperature distribution in multi-layer optical fibres for high-power fibre lasers","authors":"M. Grábner, P. Honzátko","doi":"10.24425/opelre.2021.139482","DOIUrl":null,"url":null,"abstract":"Article history: Received 10 Sep. 2021 Received in revised form 22 Oct. 2021 Accepted 23 Oct. 2021 Available online 12 Nov. 2021 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.","PeriodicalId":54670,"journal":{"name":"Opto-Electronics Review","volume":"39 1","pages":""},"PeriodicalIF":1.3000,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Opto-Electronics Review","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.24425/opelre.2021.139482","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 2
Abstract
Article history: Received 10 Sep. 2021 Received in revised form 22 Oct. 2021 Accepted 23 Oct. 2021 Available online 12 Nov. 2021 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.
期刊介绍：
Opto-Electronics Review is peer-reviewed and quarterly published by the Polish Academy of Sciences (PAN) and the Association of Polish Electrical Engineers (SEP) in electronic version. It covers the whole field of theory, experimental techniques, and instrumentation and brings together, within one journal, contributions from a wide range of disciplines. The scope of the published papers includes any aspect of scientific, technological, technical and industrial works concerning generation, transmission, transformation, detection and application of light and other forms of radiative energy whose quantum unit is photon. Papers covering novel topics extending the frontiers in optoelectronics or photonics are very encouraged.
It has been established for the publication of high quality original papers from the following fields:
Optical Design and Applications,
Image Processing
Metamaterials,
Optoelectronic Materials,
Micro-Opto-Electro-Mechanical Systems,
Infrared Physics and Technology,
Modelling of Optoelectronic Devices, Semiconductor Lasers
Technology and Fabrication of Optoelectronic Devices,
Photonic Crystals,
Laser Physics, Technology and Applications,
Optical Sensors and Applications,
Photovoltaics,
Biomedical Optics and Photonics
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