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arXiv · 1506.08223

Efficiency of dispersive wave generation in dual concentric core microstructured fiber

Daniele Modotto·Marco Andreana·Katarzyna Krupa·Gabriele Manili·Umberto Minoni·Alessandro Tonello·Vincent Couderc·Alain Barthélémy·Alexis Labruyère·Badr Mohammed Shalaby·Philippe Leproux·Stefan Wabnitz·Alejandro B. Aceves
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Abstract

We describe the generation of powerful dispersive waves that are observed when pumping a dual concentric core microstructured fiber by means of a sub-nanosecond laser emitting at the wavelength of~1064 nm. The presence of three zeros in the dispersion curve, their spectral separation from the pump wavelength, and the complex dynamics of solitons originated by the pump pulse break-up, all contribute to boost the amplitude of the dispersive wave on the long-wavelength side of the pump. The measured conversion efficiency towards the dispersive wave at 1548 nm is as high as 50%. Our experimental analysis of the output spectra is completed by the acquisition of the time delays of the different spectral components. Numerical simulations and an analytical perturbative analysis identify the central wavelength of the red-shifted pump solitons and the dispersion profile of the fiber as the key parameters for determining the efficiency of the dispersive wave generation process.

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Daniele Modotto, Marco Andreana, Katarzyna Krupa, Gabriele Manili, Umberto Minoni, Alessandro Tonello, Vincent Couderc, Alain Barthélémy, Alexis Labruyère, Badr Mohammed Shalaby, Philippe Leproux, Stefan Wabnitz, Alejandro B. Aceves. 2015-06-26. Efficiency of dispersive wave generation in dual concentric core microstructured fiber. https://doi.org/10.1364/josab.32.001676

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