Patent ID: 7013061

Claim:
A 2×2 optical switching apparatus using photonic crystal structures, the apparatus comprising: an optical-guide module having a first, a second, a third and a fourth waveguide, the first and the second waveguides guiding a first optical signal of a first input port to a first and a second output port, respectively, the third and the fourth waveguides guiding a second optical signal of a second input port to the second and the first output ports, respectively, and formed with photonic crystals having a complete photonic bandgap for a wavelength range of the first and the second optical signals; and a switching control section controlling the first and the second optical signals to be respectively guided through any one route of a first/third waveguide route and a second/fourth waveguide route, according to a route-selecting-control signal inputted from outside the 2×2 optical switching apparatus, input ports and output ports being adjacent for both the first/third waveguide route and the second/fourth waveguide route.