Saturable and dispersive parity-time symmetric directional coupler: a transmission-line modelling study
Phang, Sendy and Vukovic, Ana and Benson, Trevor M. and Creagh, Stephen and Sewell, Phillip and Gradoni, Gabriele (2014) Saturable and dispersive parity-time symmetric directional coupler: a transmission-line modelling study. In: Transparent Optical Networks (ICTON), 2014 16th International Conference on, 6-10 July 2014, Graz, Austria.
In this paper, numerical modelling of Parity-Time (PT) coupled waveguides is reported. The PT coupled waveguide structure consists of two coupled slab waveguides based on GaAs material with gain/loss material parameter models, including both dispersion and saturation. The numerical model used analyses the impact of dispersion and saturation on the eigenmode extracted by a curve fitting approach. The results show that the presence of saturation may prohibit the appearance of the threshold point above which the PT system becomes unstable.
Actions (Archive Staff Only)