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

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Petersen, Sidsel R.; Alkeskjold, Thomas T.; Poli, Federica; Coscelli, Enrico; Jorgensen, Mette M.; Laurila, Marko; Laesgaard, Jesper; Broeng, Jes;

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... View more