Photonic crystal-loaded zigzag waveguide dual-injection slow-wave structure

The invention discloses a photonic crystal-loaded zigzag waveguide dual-injection slow-wave structure; by virtue of a forbidden band characteristic of a photonic crystal structure, propagation of electromagnetic wave in a relatively distant region outside the open broadside of the broadside open zigzag waveguide can be blocked; equivalently, the waveguide cavity space of the conventional zigzag waveguide propagated by adopting a TE20 mode is reduced, so that electric field energy can be more concentrated, thereby realizing establishment of a larger electric field at the same input power, and coupled impedance of a slow-wave structure is increased; the electric field structure in the broadside open zigzag waveguide is equivalent to a part of the electric field in the conventional zigzag waveguide, and has the dispersion characteristic similar to that of the conventional zigzag waveguide; and equivalently, the photonic crystal-loaded zigzag waveguide dual-injection slow-wave structure has similar dispersion cha