Abstract:

 Coupled-resonator optical waveguide is implemented through mutual coupling of defect mode of point defects of photonic crystals, and group velocity is its important parameter. We simulate band structures of N-doped silicon coupled-resonator optical waveguide. Simulation results show that if N-doped silicon Faraday Effect based magnetic field is applied against the direction of light propagation, relative
permittivity at the frequency of the defect mode will decrease. The group velocity will also decrease to 2. 088 × 10-⁴c. We therefore confirm
regulation of Faraday Effect to waveguide group velocity. Such discovery provides a new and effective way for implementation of slow light effect at terahertz or evenlower bands.

Key words: group velocity,  photonic crystal')"> photonic crystal, coupled-resonator optical waveguide, THz band