| 摘要 |
An optical switch includes an input side switching element having a plurality of optical input ports and an output side switching element having a plurality of optical output ports. The input side switching element is provided with an input side optical deflection element group consisting of two optical deflection elements at each of optical input ports. These optical deflection elements are arranged along the direction of incidence of optical signals that are directed into the optical input ports. Respective optical output ports of the output side switching element are provided with a group of output side optical deflection elements consisting of two optical deflection elements. These optical deflection elements are arranged along the direction of emission of optical signals emitted from the optical output ports. With an optical switch of this construction, setting of the deflection angle of the light beams propagated through the space can be achieved with excellent accuracy.
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