Media type: Electronic Conference Proceeding Title: Double-cladding photonic crystal fibers with reduced cladding symmetry for Tm-doped lasers Contributor: Coscelli, Enrico; Molardi, Carlo; Poli, Federica; Cucinotta, Annamaria; Selleri, Stefano imprint: SPIE, 2014 Published in: SPIE Proceedings Extent: Language: Not determined DOI: 10.1117/12.2051624 ISSN: 0277-786X Origination: Footnote: