Efficiency of dispersive wave generation in dual concentric core microstructured fiber

Year: 2015

Authors: Modotto D., Andreana M., Krupa K., Manili G., Minoni U., Tonello A., Couderc V., Barthélémy A., Labruyère A., Shelby B.M., Leproux P., Wabnitz S., Aceves A.B.

Autors Affiliation: Dipartimento di Ingegneria dell’Informazione, Università di Brescia, via Branze 38, 25123 Brescia, Italy;
Department of Physics, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada;
Université de Limoges, CNRS, XLIM, UMR 7252, F-87000 Limoges, France;
Physics Department, Faculty of Science, Tanta University, Tanta, Egypt;
Department of Mathematics, Southern Methodist University, Dallas, Texas 75275, USA

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 a 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 breakup all contribute to boost the amplitude of the dispersive wave on the long-wavelength side of the pump. The measured conversion efficiency toward the dispersive wave at 1548 nm is as high as 50%. Our experimental analysis of the output spectra is completed by the acquisition of time delays of the different spectral components. Numerical simulations and an analytical perturbative analysis identify the central wavelength of the redshifted pump solitons and the dispersion profile of the fiber as the key parameters for determining the efficiency of the dispersive wave generation process. (C) 2015 Optical Society of America


Volume: 32 (8)      Pages from: 1676  to: 1685

KeyWords: Efficiency; Optical pumping; Pumping (laser); Solitons; Time delay, Central wavelength; Dispersion curves; Dispersion profile; Dispersive wave generation; Experimental analysis; Microstructured fibers; Spectral components; Spectral separation, Dispersion (waves)
DOI: 10.1364/JOSAB.32.001676

Citations: 5
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