Improved large-mode-area endlessly single-mode photonic crystal fibers
Niels Asger Mortensen,Martin Dybendal Nielsen,Jacob Riis Folkenberg,A. Petersson,Harald R. Simonsen +4 more
TLDR
Numerically studying the possibilities for improved large-mode-area endlessly single-mode photonic crystal fibers for use in high-power delivery applications finds that a triangular core formed by three missing neighboring air holes considerably improves the mode area and loss properties compared with the case with a core formed with one missing air hole.Abstract:
We numerically study the possibilities for improved large-mode-area endlessly single-mode photonic crystal fibers for use in high-power delivery applications. By carefully choosing the optimal hole diameter, we find that a triangular core formed by three missing neighboring air holes considerably improves the mode area and loss properties compared with the case with a core formed by one missing air hole. In a realized fiber we demonstrate an enhancement of the mode area by ∼30% without a corresponding increase in the attenuation.read more
Citations
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Proceedings ArticleDOI
Photonic crystal fibers
J. Laegsgaard,Kim P. Hansen,M. D. Nielsen,T.P. Hansen,Jesper Riishede,K. Hougaard,Thorkild Sørensen,Thomas Tanggaard Larsen,Niels Asger Mortensen,Jes Broeng,Jesper Bevensee Jensen,A. Bjarklev +11 more
TL;DR: In this paper, a review of the different types and applications of photonic crystal fibers with particular emphasis on recent advances in the field is presented, with a focus on the photonic bandgap effect.
Journal ArticleDOI
High-power air-clad large-mode-area photonic crystal fiber laser.
Jens Limpert,Thomas Schreiber,Stefan Nolte,Holger Zellmer,T. Tunnermann,Rumen Iliew,Falk Lederer,Jes Broeng,Guillaume Vienne,A. Petersson,Christian Jakobsen +10 more
TL;DR: No thermo-optical limitations are observed at the extracted /spl sim/35 W/m, therefore such fibers allow scaling to even higher powers, and single transverse mode operation is achieved with a mode-field area of 350 /spl mu/m/sup 2/.
Journal ArticleDOI
Microstructure fibres for optical sensing in gases and liquids
TL;DR: In this paper, a water-core microstructure fiber design allows nearly ideal guidance for aqueous sensing applications, where the total internal reflection by a microstructured silica-air cladding provides robust confinement of light in a fluid-filled core, if the average cladding index is sufficiently below the index of water.
Patent
Single mode propagation in fibers and rods with large leakage channels
TL;DR: In this paper, Holey rods and fibers are used in many optical systems including optical amplification systems, lasers, short pulse generators, Q-switched lasers, etc., and may be used for example for micromachining.
Journal ArticleDOI
Empirical relations for simple design of photonic crystal fibers.
Kunimasa Saitoh,Masanori Koshiba +1 more
TL;DR: Through the empirical relations provided, one can easily evaluate the fundamental properties of PCFs without the need for numerical computations.
References
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Journal ArticleDOI
All-silica single-mode optical fiber with photonic crystal cladding
TL;DR: The fabrication of a new type of optical waveguide: the photonic crystal fiber that supports a single robust low-loss guided mode over a very broad spectral range of at least 458-1550 nm.
Journal ArticleDOI
Endlessly single-mode photonic crystal fiber.
TL;DR: An effective-index model confirms that an all-silica optical fiber made by embedding a central core in a two-dimensional photonic crystal with a micrometer-spaced hexagonal array of air holes can be single mode for any wavelength.
Journal ArticleDOI
Block-iterative frequency-domain methods for Maxwell’s equations in a planewave basis
TL;DR: A fully-vectorial, three-dimensional algorithm to compute the definite-frequency eigenstates of Maxwell's equations in arbitrary periodic dielectric structures, including systems with anisotropy or magnetic materials, using preconditioned block-iterative eigensolvers in a planewave basis is described.
Journal ArticleDOI
Photonic Crystal Fibers: A New Class of Optical Waveguides
TL;DR: In this paper, a novel type of optical waveguide, operating truly by the photonic bandgap effect, has been demonstrated, which has an improved photonic crystal cladding and a central low-index structural defect along which light is guided.
Journal ArticleDOI
Large mode area photonic crystal fibre
TL;DR: In this article, a monomode optical fiber with a core diameter equal to approximately 50 free-space wavelengths has been developed, which can guide only a single mode, no matter how large the fiber diameter.