We present modulation instability analysis including azimuthal perturbations of steady-state continuous wave (CW) propagation in multicore-fiber configurations with a central core. In systems with a central core, a steady CW evolution regime requires power-controlled phase matching, which offers interesting spatial-division applications. Our results have general applicability and are relevant to a range of physical and engineering systems, including high-power fiber lasers, optical transmission in multicore fiber, and systems of coupled nonlinear waveguides.
|Number of pages||4|
|Early online date||14 Oct 2013|
|Publication status||Published - 15 Oct 2013|
Bibliographical note© 2013 Optical Society of America.
This paper was published in Optics Letters and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/ol/abstract.cfm?uri=ol-38-20-4232. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
Funding: EPSRC [UNLOC (EP/J017582/1)]; Ministry of Education and Science of the Russian Federation (agreement no. 14.B25.31.0003); European Research Council (ULTRALASER) and the Marie Curie IRSES program.