Deep-blue supercontinnum sources with optimum taper profiles--verification of GAM

We use an asymmetric 2 m draw-tower photonic crystal fiber taper to demonstrate that the taper profile needs careful optimisation if you want to develop a supercontinuum light source with as much power as possible in the blue edge of the spectrum. In particular we show, that for a given taper length...

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Bibliographic Details
Published in:Optics express 2012-05, Vol.20 (10), p.10635-10645
Main Authors: Sørensen, S T, Møller, U, Larsen, C, Moselund, P M, Jakobsen, C, Johansen, J, Andersen, T V, Thomsen, C L, Bang, O
Format: Article
Language:English
Subjects:
Algorithms
Biophysics - methods
Crystallization
Equipment Design
Fiber Optic Technology
Light
Models, Theoretical
Optical Fibers
Photons
Physics - methods
Reproducibility of Results
Spectrum Analysis, Raman - methods
Ultraviolet Rays
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Summary:We use an asymmetric 2 m draw-tower photonic crystal fiber taper to demonstrate that the taper profile needs careful optimisation if you want to develop a supercontinuum light source with as much power as possible in the blue edge of the spectrum. In particular we show, that for a given taper length, the downtapering should be as long as possible. We argue how this may be explained by the concept of group-acceleration mismatch (GAM) and we confirm the results using conventional symmetrical short tapers made on a taper station, which have varying downtapering lengths.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.20.010635