All Outputs (26)

Practical limitation on operation of nonlinear parity-time Bragg gratings (2014)
Presentation / Conference Contribution
Phang, S., Vukovic, A., Susanto, H., Benson, T. M., & Sewell, P. (2014). Practical limitation on operation of nonlinear parity-time Bragg gratings.

The paper analyses the operation of PT Bragg gratings when the dielectric material is considered to be both dispersive and nonlinear and gain and loss are saturable. The paper demonstrates the application of the nonlinear PT Bragg Grating as an optic... Read More about Practical limitation on operation of nonlinear parity-time Bragg gratings.

Modelling of dispersive PT-symmetric Bragg grating (2014)
Presentation / Conference Contribution
Phang, S., Vukovic, A., Susanto, H., Benson, T. M., & Sewell, P. (2014). Modelling of dispersive PT-symmetric Bragg grating.

This paper reports on the time-domain numerical model of a parity-time Bragg grating with saturated and dispersive gain. The model is compared against the ideal PT scenario where the gain is constant and unsaturated for all frequencies.

Saturable and dispersive parity-time symmetric directional coupler: a transmission-line modelling study (2014)
Presentation / Conference Contribution
Phang, S., Vukovic, A., Benson, T. M., Creagh, S., Sewell, P., & Gradoni, G. (2014). Saturable and dispersive parity-time symmetric directional coupler: a transmission-line modelling study.

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 dispersi... Read More about Saturable and dispersive parity-time symmetric directional coupler: a transmission-line modelling study.

Ultrafast optical switching using parity-time symmetric Bragg gratings (2013)
Journal Article
Phang, S., Vukovic, A., Susanto, H., Benson, T. M., & Sewell, P. (2013). Ultrafast optical switching using parity-time symmetric Bragg gratings. Journal of the Optical Society of America B, 30(11), https://doi.org/10.1364/JOSAB.30.002984

This paper reports on time-domain modeling of an optical switch based on the parity–time (PT) symmetric Bragg grating. The switching response is triggered by suddenly switching on the gain in the Bragg grating to create a PT-symmetric Bragg grating.... Read More about Ultrafast optical switching using parity-time symmetric Bragg gratings.

Parity-Time coupled microresonators: Kramers-Kronig limitation
Presentation / Conference Contribution
Phang, S., Vukovic, A., Creagh, S. C., Sewell, P., Gradoni, G., & Benson, T. M. Parity-Time coupled microresonators: Kramers-Kronig limitation.

In this talk, we use a KKE argument to show that the presence of dispersion alters the eigen-frequencies of coupled PT coupled microresonators, so that their eigen-frequencies are no longer complex conjugates after the EP.

Threshold preservation of PT-resonant structures in realistic-dispersive medium
Presentation / Conference Contribution
Phang, S., Vukovic, A., Creagh, S. C., Benson, T. M., Sewell, P., & Gradoni, G. Threshold preservation of PT-resonant structures in realistic-dispersive medium.

The impact of material dispersion in the performance of parity-time (PT) symmetric coupled microresonators is studied. The eigenfrequencies of the coupled PT-system are analysed for different dispersion parameter. We show that realistic dispersion pr... Read More about Threshold preservation of PT-resonant structures in realistic-dispersive medium.