Space switch device

A spatial switching apparatus having a plurality of input terminals including a drop signal to an electric layer or an add signal from the electric layer and a plurality of output terminals, comprising:

• a signal wavelength converting portion having an electric signal converting element converting the input optical signal into an electric signal and a variable wavelength laser, the signal wavelength converting portion using the variable wavelength laser to convert an electric signal converted by the electric signal converting element into an optical signal of an arbitrary wavelength;
• and
• a spatial switching portion having a plurality of first cyclic AWGs performing output from an output port corresponding to a wavelength of an input signal input from the variable wavelength laser and second cyclic AWGs having the same total number of input ports as the total number of the output ports of the plurality of the first cyclic AWGs, the spatial switching portion routing and outputting the input signal from an output port corresponding to a wavelength of the input signal out of output ports of the second cyclic AWGs.