Abstract
Spatial self-action of light is one of the fundamental phenomena known from the early days of the laser era [1]. In freely propagating beams, this phenomenon gives rise to a broad diversity of intriguing physical phenomena and beam dynamics scenarios, including optical filamentation, collapsing beams, and light bullets. In waveguide structures, spatial self-action is manifested in a different fashion, leading to the coupling of waveguide modes [2]. The spatiotemporal field dynamics in this regime is sensitive to the sort of coupled modes and the type of a waveguide. As a consequence, high-power field evolution scenarios in complex waveguide structures are often difficult to understand. Identifying general tendencies of field evolution of this kind is therefore of special value for optical science and photonic technologies.
© 2009 IEEE
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