Abstract
Nonlinear interactions occurring in the framework of so-called optical event horizons attract attention from the scientific community as the propagation of waves in nonlinear dispersive media has been proven to be a useful testbed for the study of artificial event horizons [1, 2]. Analogue of optical event horizons occurs when an intense soliton pulse prevents a weak probe wave propagating at a different velocity to penetrate through it. The energy transfer inherent to this nonlinear interaction has been pointed as potentially useful for applications such as efficient frequency converters [3] or all-optical transistors [4]. Though numerous studies have been conducted in photonic crystal fibers, the first demonstrations in integrated structures of optical effects pertaining to event horizons have only been recently reported [5] thanks to the use of high quality dispersion engineered silicon wire waveguides. In this latter work, the soliton pump interacted with a weak CW background, resulting in a poor overall frequency conversion efficiency.
© 2017 IEEE
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