The University of Sydney, Australia
Gap Soliton, Fiber Bragg Grating, Dispersive Reflectivity.
Photonics, Optics and Laser Technology
Ultrafast Electronics, Photonics and Optoelectronics
The interactions of in-phase and p-out-of-phase quiescent Bragg grating solitons in a dual-core system where
one core has Kerr nonlinearity and other is linear and has a Bragg grating with dispersive reflectivity are
systematically investigated. The effect of dispersive reflectivity on the outcomes of the interactions is analyzed.
It is found that above a certain value of dispersive reflectivity solitons develop sidelobes. The presence of
sidelobes has a significant effect on the outcomes of the interactions. In the absence of sidelobes, in-phase
soliton-soliton interactions may result in several outcomes such as merger into a quiescent soliton, symmetric
or asymmetric separation of solitons or destruction of both solitons. However, the interaction of solitons in the
presence of sidelobes produces other outcomes such as repulsion of solitons or formaion of a temporary bound
state followed by separation of two solitons. p-out-of-phase solitons generally repel each other. However, in
e presence of sidelobes, interactions of p-out-of-phase solitons may lead to the formation of temporary
bound state and subsequent generation of two separating solitons.