Light controllable defect modes in three-dimensionalphotonic crystal

Abstract

The authors experimentally demonstrate the controllability of the defect mode in a submillimetre three-dimensional silicon photonic crystal. The resonant mode at 253 GHz is created inside the forbidden gap by inserting interstitial defects. The transmission level of the mode is modulated externally by more than 8 dB with a 330 mW laser illumination. Transmission spectra are confirmed by numerical simulations.