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Anti-reflection and polarizing photonic structures for high-power fiber applications
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SYSNO ASEP 0485723 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Anti-reflection and polarizing photonic structures for high-power fiber applications Author(s) Vaněk, Martin (URE-Y)
Vaniš, Jan (URE-Y) RID
Baravets, Yauhen (URE-Y)
Todorov, Filip (URE-Y)
Čtyroký, Jiří (URE-Y) RID
Honzátko, Pavel (URE-Y) RIDNumber of authors 6 Article number 102320W Source Title Proceedings of SPIE, Micro-structured and Specialty Optical Fibres V, (vol.10232). - Bellingham : SPIE, 2017 / Kali K. ; Kaňka J. ; Mendez A. - ISBN 978-1-5106-0965-5 Number of pages 8 s. Publication form Print - P Action Conference on Micro-Structured and Specialty Optical Fibres V Event date 26.04.2017 - 27.04.2017 VEvent location Prague Country CZ - Czech Republic Event type WRD Language eng - English Country US - United States Keywords fiber laser ; diffraction grating ; optical fiber Subject RIV BH - Optics, Masers, Lasers OECD category Optics (including laser optics and quantum optics) R&D Projects GA15-07908S GA ČR - Czech Science Foundation (CSF) Institutional support URE-Y - RVO:67985882 UT WOS 000406960900022 DOI 10.1117/12.2271705 Annotation We investigated behaviours of 1D binary diffraction gratings fabricated on optical fiber facets. Only sub wavelength structures were considered to suppress higher diffraction orders. The aperiodic rigorous coupled wave analysis, the Fourier modal method and the finite-difference time-domain numerical methods were used to compute and optimize the modal reflectance of the investigated structures. Optimized gratings were milled on fiber facets by focused ion beam. One of the gratings was tested in a thulium-doped fiber laser where it acted as a low reflectivity polarizing output mirror. A slope efficiency of the laser and a beam quality parameter were conserved while lasing threshold slightly increased 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 2018
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