Physics – Optics
Scientific paper
2004-05-20
Physics
Optics
Scientific paper
10.1364/OL.30.001852
Periodic structures consisting of alternating layers of positive index and negative index materials possess a novel band gap at the frequency at which the average refractive index is zero. We show that in the presence of a Kerr nonlinearity, this zero-n gap can switch from low transmission to a perfectly transmitting state, forming a nonlinear resonance or gap soliton in the process. This zero-n gap soliton is omnidirectional in contrast to the usual Bragg gap soliton of positive index periodic structures
Hegde Ravi S.
Winful Herbert G.
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