Hybrid Ytterbium-doped large-mode-area photonic crystal fiber amplifier for long wavelengths.

Sidsel Rübner Petersen, Thomas T. Alkeskjold, Federica Poli, Enrico Coscelli, Mette Marie Jørgensen, Marko Laurila, Jesper Lægsgaard, Jes Broeng

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Abstract

A large-mode-area Ytterbium-doped photonic crystal fiber amplifier with build-in gain shaping is presented. The fiber cladding consists of a hexagonal lattice of air holes, where three rows are replaced with circular high-index inclusions. Seven missing air holes define the large-mode-area core. Light confinement is achieved by combined index and bandgap guiding, which allows for single-mode operation and gain shaping through distributed spectral filtering of amplified spontaneous emission. The fiber properties are ideal for amplification in the long wavelength regime of the Ytterbium gain spectrum above 1100 nm, and red shifting of the maximum gain to 1130 nm is demonstrated.
Original languageEnglish
JournalOptics Express
Volume20
Issue number6
Pages (from-to)6010-6020
ISSN1094-4087
DOIs
Publication statusPublished - 2012

Bibliographical note

This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-20-6-6010. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.

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