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Double-clad rare-earth-doped fiber with cross-section tailored for splicing to the pump and signal fibers: analysis of pump propagation
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SYSNO ASEP 0396681 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Double-clad rare-earth-doped fiber with cross-section tailored for splicing to the pump and signal fibers: analysis of pump propagation Author(s) Koška, Pavel (URE-Y)
Peterka, Pavel (URE-Y) RID
Kašík, Ivan (URE-Y) RID
Matějec, Vlastimil (URE-Y)
Podrazký, Ondřej (URE-Y) RIDSource Title MICRO-STRUCTURED AND SPECIALTY OPTICAL FIBRES II, 8775 - Proceedings of SPIE. - BELLINGHAM : SPIE-INT SOC OPTICAL ENGINEERING, 2013 / Kalli K. ; Kanka J. ; Mendez A. - ISSN 0277-786X - ISBN 978-0-8194-9577-8 Number of pages 6 s. Publication form Print - P Action Conference on Micro-structured and Specialty Optical Fibres II Event date 15.04.2013-17.04.2013 VEvent location Prague Country CZ - Czech Republic Event type WRD Language eng - English Country US - United States Keywords rare-earth-doped fibers ; optical pumping ; fiber amplifiers Subject RIV JA - Electronics ; Optoelectronics, Electrical Engineering R&D Projects GAP102/10/2139 GA ČR - Czech Science Foundation (CSF) Institutional support URE-Y - RVO:67985882 UT WOS 000323548700023 DOI 10.1117/12.2017352 Annotation In this contribution we present numerical study of propagation of the multimode pump radiation in the inner cladding of the developed double-clad fiber. Field evolution was simulated using full vector finite element beam propagation method. Due to reeling of the fiber on the spool, the curvature of the fiber is involved in the model. The longitudinal dependence of power distribution was then analyzed. The simulations showed that after the length of propagation of about 40 mm the field becomes homogeneously distributed in the structure. Over 90 % of pump energy is absorbed in 3 m of the rare-earth-doped fiber with core-absorption of 2000 dB/m and cladding-core diameter ratio of 18.5. This confirms suitability of the tailored cross section for effective pump absorption along the rare-earth-doped fiber Workplace Institute of Radio Engineering and Electronics Contact Petr Vacek, vacek@ufe.cz, Tel.: 266 773 413, 266 773 438, 266 773 488 Year of Publishing 2014
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