Controllable terahertz wave power splitter with variable output ports

The invention discloses a controllable terahertz wave power splitter with variable output ports. The power splitter comprises dielectric cylinder photonic crystals in two-dimensionally periodic arrangement; the power splitter further comprises a first control signal input end, a second control signal input end, a first signal input end, a second signal input end, a first signal output end, a second signal output end, a first photonic crystal resonance ring, a second photonic crystal resonance ring, a third photonic crystal resonance ring, a fourth photonic crystal resonant ring, a first coupled photonic crystal dielectric cylinder array, a second coupled photonic crystal dielectric cylinder array, a third coupled photonic crystal dielectric cylinder array, a fourth coupled photonic crystaldielectric cylinder array, a fifth coupled photonic crystal dielectric cylinder array, a sixth coupled photonic crystal dielectric cylinder array, a seventh coupled photonic crystal dielectric cylinder array and an eighth co