✦ LIBER ✦

Modelling the vertical grating-waveguide coupler for the description of its nonlinear symmetry-breaking dynamics

✍ Scribed by M. Delqué; A. Dewandre; K. Phan Huy; S.-P. Gorza; M. Haelterman

Publisher: Elsevier Science
Year: 2009
Tongue: English
Weight: 348 KB
Volume: 282
Category: Article
ISSN: 0030-4018
DOI: 10.1016/j.optcom.2009.05.076

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✦ Synopsis

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.