9th International Conference on Numerical Simulation of Optoelectronic Devices, Gwangju, South Korea, 14 - 17 September 2009, pp.29-30, (Full Text)
Simultaneous propagation of transverse-electric and transverse-magnetic modes through a linear waveguide defined in an annular photonic crystal in two dimensions is demonstrated. Overlapping of the two linearly-independent guided modes is achieved by the utilization of Simplex algorithm for the optimal design parameters.