Open AccessAmplification and ASE suppression in a polarization-maintaining ytterbium-doped all-solid photonic bandgap fibre
Author(s) -
Christina B. Olausson,
Charlotte I. Falk,
Jens K. Lyngsø,
B. B. Jensen,
Kasper T. Therkildsen,
J. Thomsen,
Kristoffer Lindskov Hansen,
A. Bjarklev,
Jes Broeng
Publication year - 2008
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.013657
Subject(s) - materials science , amplified spontaneous emission , ytterbium , lasing threshold , photonic crystal , optics , spontaneous emission , optoelectronics , wavelength , photonic bandgap , cladding (metalworking) , doping , laser , physics , metallurgy
We demonstrate suppression of amplified spontaneous emission at the conventional ytterbium gain wavelengths around 1030 nm in a cladding-pumped polarization-maintaining ytterbium-doped all-solid photonic crystal fibre. The fibre works through combined index and bandgap guiding. Furthermore, we show that the peak of the amplified spontaneous emission can be shifted towards longer wavelengths by rescaling the fibre dimensions. Thereby one can obtain lasing or amplification at longer wavelengths (1100 nm - 1200 nm) as the amount of amplification in the fibre is shown to scale with the power of the amplified spontaneous emission.