Abstract
A photonic crystal, which is composed of dielectric periodic microstructures, can confine
electromagnetic waves within it using the photonic bandgap effect with low loss. In this paper, the recent
progress in the development and application of photonic crystals in the terahertz frequency band, of
which is located between that of radio and light waves, is reviewed.
Key Words: Terahertz, Photonic crystal, Photonic bandgap, Waveguide
