Journal
OPTICS LETTERS
Volume 43, Issue 14, Pages 3345-3348Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.43.003345
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Funding
- National Science Foundation (NSF) [ECCS 1505636]
- Directorate For Engineering
- Div Of Electrical, Commun & Cyber Sys [1505636] Funding Source: National Science Foundation
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We investigate stability of optical solitons in graded-index (GRIN) fibers by solving an effective nonlinear Schrodinger equation that includes spatial self-imaging effects through a length-dependent nonlinear parameter. We show that this equation can be reduced to the standard NLS equation for optical pulses whose dispersion length is much longer than the self-imaging period of the GRIN fiber. Numerical simulations are used to reveal that fundamental GRIN solitons as short as 100 fs can form and remain stable over distances exceeding 1 km. Higher-order solitons can also form, but they propagate stably over shorter distances. We also discuss the impact of third-order dispersion on a GRIN soliton. (c) 2018 Optical Society of America
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