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Proceedings Paper

Striving towards a periodicity breaking of the photonic crystal fibers microstructuration for an unprecedented singlemode robustness
Author(s): Romain Dauliat; Aurélien Benoît; Raphaël Jamier; Kay Schuster; Stephan Grimm; François Salin; Philippe Roy
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Paper Abstract

We report in this communication on the investigation of novel triple-clad Very-Large-Mode-Area (VLMA) largepitch- fibers demonstrating numerically a strengthening of the fiber singlemodeness. The practical feasibility of the proposed fiber designs is ensured by taking into account the specifications of the resorted manufacturing technique. After a brief discussion about the mechanism of modal filtering into state-of-the-art air-silica leaky structures, we will present a novel kind of VLMA fibers. Here, the standard 6-fold symmetry as well as the periodic photonic crystal cladding are removed in profit to a totally aperiodic inner cladding microstructuration. This aperiodicity enables to exacerbate the singlemode robustness by maximizing the high-order-modes (HOMs) leakage out of the gain region in favour of the Gaussian fundamental mode. The behaviour of two different aperiodic LPFs is reported in regard to the refractive index of the inclusions, the doped core diameter and the operating wavelength. Thus, the scalability of these novel structures is evidenced. Finally, the manufacturability challenge is estimated by taking into account small index-mismatch between the active core and the background material.

Paper Details

Date Published: 2 May 2014
PDF: 8 pages
Proc. SPIE 9128, Micro-structured and Specialty Optical Fibres III, 912807 (2 May 2014); doi: 10.1117/12.2051551
Show Author Affiliations
Romain Dauliat, XLIM Institut de Recherche, CNRS, Univ. de Limoges (France)
Institut für Photonische Technologien e.V. (Germany)
Aurélien Benoît, XLIM Institut de Recherche, CNRS, Univ. de Limoges (France)
EOLITE Systems (France)
Raphaël Jamier, XLIM Institut de Recherche, CNRS, Univ. de Limoges (France)
Kay Schuster, Institut für Photonische Technologien e.V. (Germany)
Stephan Grimm, Institut für Photonische Technologien e.V. (Germany)
François Salin, EOLITE Systems (France)
Philippe Roy, EOLITE Systems (France)


Published in SPIE Proceedings Vol. 9128:
Micro-structured and Specialty Optical Fibres III
Kyriacos Kalli; Alexis Mendez, Editor(s)

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