In this paper, large-mode-area, double-cladding, rare-earth-doped photonic crystal fibers are investigated in order to understand how the refractive index distribution and the mode competition given by the amplification can assure singlemode propagation. Fibers with different core diameters, i.e., 35,60, and 100 μm, are considered. The analysis of the mode effective index, overlap, effective area, gain, and power evolution along the doped fiber provides clear guidelines on the fiber physical characteristics to be matched in the fabrication process to obtain a truly or effectively single-mode output beam.
Single-Mode Regime in Large-Mode-Area Rare-Earth Doped Rod-Type PCFs / Poli, Federica; Cucinotta, Annamaria; Passaro, Davide; Selleri, Stefano; J., Lægsgaard; J., Broeng. - In: IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS. - ISSN 1077-260X. - 15:(2009), pp. 54-60. [10.1109/JSTQE.2008.2010265]
Single-Mode Regime in Large-Mode-Area Rare-Earth Doped Rod-Type PCFs
POLI, Federica;CUCINOTTA, Annamaria;PASSARO, Davide;SELLERI, Stefano;
2009-01-01
Abstract
In this paper, large-mode-area, double-cladding, rare-earth-doped photonic crystal fibers are investigated in order to understand how the refractive index distribution and the mode competition given by the amplification can assure singlemode propagation. Fibers with different core diameters, i.e., 35,60, and 100 μm, are considered. The analysis of the mode effective index, overlap, effective area, gain, and power evolution along the doped fiber provides clear guidelines on the fiber physical characteristics to be matched in the fabrication process to obtain a truly or effectively single-mode output beam.| File | Dimensione | Formato | |
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