Open AccessSingle-mode analysis of Yb-doped double-cladding distributed spectral filtering photonic crystal fibers
Author(s) -
Enrico Coscelli,
Federica Poli,
Thomas Tanggaard Alkeskjold,
D. Passaro,
Annamaria Cucinotta,
Lasse Leick,
Jes Broeng,
Stefano Selleri
Publication year - 2010
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.027197
Subject(s) - materials science , cladding (metalworking) , photonic crystal fiber , optics , doping , all silica fiber , refractive index , ytterbium , plastic clad silica fiber , double clad fiber , fiber laser , optical fiber , photonic crystal , single mode optical fiber , optoelectronics , plastic optical fiber , multi mode optical fiber , wavelength , composite material , physics
Hybrid large mode area Ytterbium-doped double-cladding photonic crystal fibers with anti-symmetric high refractive index inclusions provide efficient amplified spontaneous emission spectral filtering. Their performances have been analyzed by numerical simulations and experimental measurements. In particular, the fiber single-mode behaviour has been studied, by taking into account the fundamental and the first higher-order mode. Two approaches, the core down-doping and the reduction of the air-hole diameter in the inner cladding, have been successfully applied to reduce the higher-order mode content, regardless of the bending of the doped fiber, without significantly affecting its spectral filtering properties.