Počet záznamů: 1
Simulations of Pump Absorption in Tandem-Pumped Octagon Double-Clad Fibers
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SYSNO ASEP 0553146 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Simulations of Pump Absorption in Tandem-Pumped Octagon Double-Clad Fibers Tvůrce(i) Grábner, Martin (URE-Y)
Nithyanandan, K. (IN)
Peterka, Pavel (URE-Y) RID
Koška, Pavel (URE-Y)
Jasim, Ali (URE-Y)
Honzátko, Pavel (URE-Y) RIDCelkový počet autorů 6 Číslo článku 1500314 Zdroj.dok. IEEE Photonics Journal. - : Institute of Electrical and Electronics Engineers - ISSN 1943-0655
Roč. 13, č. 2 (2021)Poč.str. 14 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova Double-clad fiber ; Fiber laser ; Finite element beam propagation ; Pump absorption Vědní obor RIV BH - Optika, masery a lasery Obor OECD Optics (including laser optics and quantum optics) Způsob publikování Open access Institucionální podpora URE-Y - RVO:67985882 UT WOS 000685529500004 EID SCOPUS 85101780051 DOI 10.1109/JPHOT.2021.3060857 Anotace The cladding pumping within a double-clad fiber structure is an effective technique to convert high-power multimode beam into high-power, almost diffraction limited beam. Since the pump efficiency is limited by the presence of higher skew-ray modes, geometrical perturbations are used to scramble the modes and to achieve a higher overlap of the electromagnetic field with the doped core. In this paper, the combined effect of fiber coiling and twisting is investigated in the double-clad fiber structure with the octagonal shape of an inner cladding. Electromagnetic field propagation through fibers with different cross-section areas, bending radii and twisting rates is numerically simulated using finite element beam propagation method. Holmium-doped double-clad fiber pumped in tandem configuration at wavelength 1950 nm is selected as an example. Nontrivial dependence of pump absorption on bending radius with the presence of local maxima is revealed. The observed impact of fiber coiling and twisting increases with the size of the cross-section area of the inner cladding Pracoviště Ústav fotoniky a elektroniky Kontakt Petr Vacek, vacek@ufe.cz, Tel.: 266 773 413, 266 773 438, 266 773 488 Rok sběru 2022 Elektronická adresa https://doi.org/10.1109/JPHOT.2021.3060857
Počet záznamů: 1