Affiliation:
1. High Energy Physics Division, Department of Physics, Jadavpur University, Calcutta – 700032, India
Abstract
A new approach recently developed by one of the authors has been utilised to study the effect of Raman perturbation on the propagation characteristics of spatial soliton in an optical lattice. The time-dependent nature of perturbation effectively induces a spatio-temporal behaviour of the pulse. The variation of the amplitude, width, chirp and frequency of the pulse are obtained through the projection operator technique. Important consequences are seen to follow due to the mutual influence of the periodicity of the lattice and the strength of Raman perturbations. Optimum configurations are sorted out with the help of an external pumping at fixed spatial interval. It is observed that in the absence of any dispersion management, it is possible to restore the profile of the pulse by pumping at regular series of intervals.
Publisher
World Scientific Pub Co Pte Lt
Subject
Physics and Astronomy (miscellaneous),Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials