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Modelling the vertical grating-waveguide coupler for the description of its nonlinear symmetry-breaking dynamics |
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| Authors: | M. Delqué ,A. Dewandre,S.-P. Gorza |
| Affiliation: | a Service OPERA-Photonique, CP194/5, Université Libre de Bruxelles (ULB), Avenue F.D. Roosevelt, 1050 Bruxelles, Belgium b Département d’Optique P.M. Duffieux, Institut FEMTO-ST, Université de Franche-Comté, CNRS UMR 6174, 25030 Besançon, France |
| Abstract: | We propose a new scheme to observe the symmetry-breaking dynamics of two counter-propagating beams in a Kerr-type nonlinear waveguide coupler. Using a grating to couple light at normal incidence upon the waveguide allows for a single-beam geometry. The ability of the grating to couple light symmetrically is demonstrated on the basis of a linear coupled-mode approach especially adapted to vertical coupling. The nonlinear symmetry-breaking dynamics is studied analytically. |
| Keywords: | 42.65.Pc 42.65.Sf |
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