Nonlinear trimer resonators for compact ultra-fast switching.

摘要: We propose and numerically verify a scheme for compact optical modulation which can enable complex directional switching of signals in integrated micro-optical circuits within hundreds femtoseconds. The is based on trimer comprised two identical silica whispering gallery mode (WGM) microresonators spaced by central non-linear WGM resonator. resonator the form cylinder with thin coating an ultrafast Kerr nonlinear material (a J-aggregate cyanine dye). Using two-dimensional finite-difference time-domain method realistic structural parameters, we investigated near-field coupling from waveguide to subsequent process. In our sandwiched control has resonant frequency that mismatched input output resonators. Therefore energy coupled into only primary linear operation. However, light intensities more than ~10−2 W/μm effective index hence eigenfrequency be shifted match its neighbors redirected.