Patent ID: 7408700

Claim:
An optical switch which deflects an input light to output the input light to a designated part of a plurality of output ports in a switching manner, the optical switch comprising: a first light deflection element for deflecting the input light at an angle corresponding to a position of the designated port with an applied first drive voltage; and a second light deflection element for finely adjusting a deflection angle of the light propagating from the first deflection element to the designated port with an applied second drive voltage such that a power of light output from the designated port becomes maximum, wherein the first light deflection element comprises a crystal member exhibiting an electro-optic effect and electrodes formed on opposing faces of the crystal member and, receiving a supply of the first drive voltage, and the second light deflection element comprises a crystal member exhibiting an electro-optic effect and electrodes formed on opposing faces of the crystal member, and receiving a supply of the second drive voltage.