Optimum fiber tapers for increasing the power in the blue-edge of a supercontinuum - group-acceleration matching

Simon Toft Sørensen, Alexander Judge, Carsten L. Thomsen, Ole Bang

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

We demonstrate how the gradient of the tapering in a tapered fiber can significantly affect the trapping and blueshift of dispersive waves (DWs) by a soliton. By modeling the propagation of a fundamental 10 fs soliton through tapered fibers with varying gradients, it is shown that the soliton traps and blueshifts an increased fraction of the energy in its DW when the gradient is decreased. This is quantified by the group-acceleration mismatch between the soliton and DW at the entrance of the taper. These findings have direct implications for the achievable power in the blue edge of a supercontinuum generated in a tapered fiber and explain observations of a lack of power in the blue edge.
Original languageEnglish
JournalOptics Letters
Volume36
Issue number6
Pages (from-to)816-818
ISSN0146-9592
DOIs
Publication statusPublished - 2011

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