Telecommunications and Teleinformatics Department, Wroclaw University of Science and Technology, Wyb. Wyspianskiego 27, 50-370 Wroclaw, Poland
Lukasz Sojka
Telecommunications and Teleinformatics Department, Wroclaw University of Science and Technology, Wyb. Wyspianskiego 27, 50-370 Wroclaw, Poland
Angela B. Seddon
Mid-Infrared Photonics Group, George Green Institute for Electromagnetics Research, Faculty of Engineering, The University of Nottingham, University Park, Nottingham NG7 2RD, UK
Trevor M. Benson
Mid-Infrared Photonics Group, George Green Institute for Electromagnetics Research, Faculty of Engineering, The University of Nottingham, University Park, Nottingham NG7 2RD, UK
Emma Barney
Mid-Infrared Photonics Group, George Green Institute for Electromagnetics Research, Faculty of Engineering, The University of Nottingham, University Park, Nottingham NG7 2RD, UK
Mario C. Falconi
Politecnico di Bari, Bari, Via Edoardo Orabona, 4, 70125 Bari, Italy
Francesco Prudenzano
Politecnico di Bari, Bari, Via Edoardo Orabona, 4, 70125 Bari, Italy
Marian Marciniak
National Institute of Telecommunication, Szachowa 1, 04-894 Warsaw, Poland
Hovik Baghdasaryan
Fiber Optics Communication Laboratory, National Polytechnic University of Armenia, Teryan Str. 105, Yerevan 0009, Armenia
Pavel Peterka
Institute of Photonics and Electronics, Czech Academy of Sciences, Chaberska 57, 18251 Prague, Czech Republic
Stefano Taccheo
Laser Group, College of Engineering, Bay Campus, Swansea SA1 8EN, UK
The modeling and design of fiber lasers facilitate the process of their practical realization. Of particular interest during the last few years is the development of lanthanide ion-doped fiber lasers that operate at wavelengths exceeding 2000 nm. There are two main host glass materials considered for this purpose, namely fluoride and chalcogenide glasses. Therefore, this study concerned comparative modeling of fiber lasers operating within the infrared wavelength region beyond 2000 nm. In particular, the convergence properties of selected algorithms, implemented within various software environments, were studied with a specific focus on the central processing unit (CPU) time and calculation residual. Two representative fiber laser cavities were considered: One was based on a chalcogenide–selenide glass step-index fiber doped with trivalent dysprosium ions, whereas the other was a fluoride step-index fiber doped with trivalent erbium ions. The practical calculation accuracy was also assessed by comparing directly the results obtained from the different models.
