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

Authors
  • Petersen, Sidsel R
  • Alkeskjold, Thomas T
  • Poli, Federica
  • Coscelli, Enrico
  • Jørgensen, Mette M
  • Laurila, Marko
  • Lægsgaard, Jesper
  • Broeng, Jes
Type
Published Article
Journal
Optics Express
Publisher
The Optical Society
Publication Date
Mar 12, 2012
Volume
20
Issue
6
Pages
6010–6020
Identifiers
DOI: 10.1364/OE.20.006010
PMID: 22418478
Source
Medline
License
Unknown

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.

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