Modeling of optically controlled dielectric resonators using conformal ADI-FDTD method

The alternating direction implicit (ADI) finite-difference time-domain (FDTD) formulation has been used to estimate the effect that solid state plasmas have on the resonant frequency of dielectric resonators (DRs). By using conformal technique, an accurate numerical modeling is carried out to describe the performance of optically controlled DRs. The results are compared with measurement and are shown to yield a quantitative estimate of the optically induced DR frequency shift as a function of the illumination, properties of the plasma host semiconductor, and the properties of the DR.