In the present work, a PT-symmetric closed-form quadrimer waveguides system has been considered. We observe the
saturation of the optical powers in the gain-guides in nonlinear regime under the coupling scheme considered.
Moreover, we also find that accumulation of optical powers in the g-r parametric space (‘g’ is the gain/loss parameter, ‘r’
nonlinearity co-efficient) in the different waveguides significantly depends on the nature (i.e. focusing or defocusing)
and the strength of nonlinearity and gain/loss profile. The potential applications of this quadrimer system might be in
generating high constant-power optical sources.
We demonstrate the formation of a fundamental soliton from a higher order soliton in a silicon waveguide if the two-photon absorption (TPA) parameter is judiciously chosen. We also report the effect of TPA on soliton-soliton interaction in a silicon waveguide.
We propose, for the first time to the best of our knowledge, a design for a silicon waveguide-based nonlinear directional coupler in order to achieve soliton self-switching. Numerical analysis shows that the proposed design may be quite useful as a soliton switch.
A numerical study of femtosecond soliton switching by the relative phase change of a weak control pulse is carried out for a Kerr coupler with the simultaneous presence of intermodal dispersion, cross-phase modulation, third-order dispersion, self-steepening, and intrapulse Raman scattering. It is shown (numerically) that cross-phase modulation, though it appears as a very tiny parameter, plays a positive role in this mode of soliton switching and that these perturbative effects may lead to useful soliton switching if the relative phase of the control pulse is monitored judiciously.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.