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- Title
Step-like structure and assisted tunneling in two coupled modulated waveguides.
- Authors
Cui, J. G.; Li, W. D.
- Abstract
The propagation of an initially-localized optical beam along two coupled modulated waveguides is investigated. A universal step-like structure emerges in the propagation process once $|\delta$ v/ $v_0|$ ~ 1 and T = 2 π/ $m v_0$, both for the linear and nonlinear optical waveguides. The reason is that the coupling between the two waveguides can be completely suppressed at z = m T or (2 m+1) T/2. When the nonlinearity is strong, assisted tunneling can be found for the initially-localized optical beam by slightly increasing the strength of the modulation.
- Subjects
QUANTUM tunneling; OPTICAL waveguides; PHASE modulation; QUANTUM theory; SCHRODINGER equation; NUMERICAL solutions to equations; REFRACTIVE index; BOSE-Einstein condensation
- Publication
European Physical Journal D (EPJ D), 2011, Vol 61, Issue 1, p187
- ISSN
1434-6060
- Publication type
Article
- DOI
10.1140/epjd/e2010-00251-0