Time Domain (TLM) modelling of nonlinear and dispersive optical materials and phenomena

Research Staff: Vijay Janyani, Ana Vukovic, Trevor M. Benson and Phillip Sewell

Vijay Janyani's PhD is funded by the The Commonwealth Scholarship Commission, UK

The behaviour of optical waves in nonlinear and dispersive materials has been the subject of intense investigations in recent years, driven by applications such as switching and bistability, optical limiting, pulse shaping, wavelength conversion and soliton propagation. Due to the complex nature of these phenomena, analytical treatment is restricted only to simplified cases. Time domain numerical analysis is widely used in electromagnetic modelling and seems well-suited to performing the complex simulations required by photonics devices based on these effects. This project investigates new methods and approaches in TLM for modelling these complex materials.

The example below shows all optical switching and bistability in a Bragg grating.

Publications

[1]. T.M. Benson, A. Al-Jarro, P. Sewell, V. Janyani, J.D. Paul, and A. Vukovic. Simulation of Nonlinear Integrated Photonics Devices: A Comparison of TLM and Numerical Time Domain Integral Equation Approaches. EURO_EM --- SUBMITTED. 2004. Magdeburg.
[2]. V. Janyani, A. Vukovic, J.D. Paul, T.M. Benson, and P. Sewell. Time domain simulation of all-optical limiter using Kerr and Duffing models. 12th International Workshop on Optical Waveguide Theory and Numerical Modelling. 2004. Gent, Belgium.
[3]. V. Janyani, A. Vukovic, J.D. Paul, T.M. Benson, and P. Sewell. Modelling of nonlinear optical effects in TLM. Talk delivered. 2003. Prof. Ted Sargent's Group, University of Toronto, Toronto, Canada.
[4]. V. Janyani, A. Vukovic, J.D. Paul, T.M. Benson, and P. Sewell, TLM modelling of non-linear optical effects in fibre Bragg gratings. IEE Optoelectronics (communicated), 2003.
[5]. V. Janyani, A. Vukovic, J.D. Paul, T.M. Benson, and P. Sewell. Modelling of Nonlinear Optical Effects Using TLM. The 5th International Workshop on Computational Electromagnetics in Time Domain - TLM, FDTD and Other Techniques. 2003. Halifax, Nova Scotia, Canada.
[6]. V. Janyani, A. Vukovic, T.M. Benson, and P. Sewell. Modelling of Non-Linear Optical Materials Using the TLM Method. 6th International Conference on Applied Electromagnetics. 2003. Nis, Yugoslavia.