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Proceedings Paper

New design of single-mode large-mode-area photonic crystal fibers
Author(s): Stefano Selleri; Annamaria Cucinotta; Matteo Foroni; Federica Poli; Michele Bottacini
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Paper Abstract

Triangular photonic crystal fibers with different core geometries have been investigated, in order to design single-mode large mode area fibers. In particular, 7-rod core fibers, obtained by removing the central air-hole and the first six surrounding ones in the transverse section, have been considered. By taking into account the leakage losses of the second-order mode, a phase diagram, which describes the boundary between the single-mode and multi-mode operation regimes, as well as the endlessly single-mode region, has been evaluated. Moreover, starting from this analysis, the cutoff normalized frequency has been calculated according to a formulation of the V parameter previously adopted for traditional 1-rod core triangular fibers. Simulation results have shown that, for a fixed air-filling fraction, 7-rod core triangular photonic crystal fibers are single-mode in a smaller wavelength range than 1-rod core ones. However, it is possible to obtain high effective area values, as well as single-mode operation, with 7-rod core fibers by considering low air-filling fractions and relatively small hole-to-hole distances.

Paper Details

Date Published: 12 October 2005
PDF: 11 pages
Proc. SPIE 5950, Photonic Crystals and Fibers, 59500U (12 October 2005); doi: 10.1117/12.622157
Show Author Affiliations
Stefano Selleri, Univ. of Parma (Italy)
Annamaria Cucinotta, Univ. of Parma (Italy)
Matteo Foroni, Univ. of Parma (Italy)
Federica Poli, Univ. of Parma (Italy)
Michele Bottacini, Univ. of Parma (Italy)

Published in SPIE Proceedings Vol. 5950:
Photonic Crystals and Fibers
Waclaw Urbanczyk; Bozena Jaskorzynska; Philip St. J. Russell, Editor(s)

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