Optical switch, and method for controlling drive voltage thereof
AssigneeFujitsu Limited
InventorsYutaka Kai, Setsuo Yoshida
Life of this patent
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Abstract
An optical switch which minimizes losses in the power of output light while enabling deflection of light within a range of comparatively large deflection angles used for setting switching among output ports. The optical switch is configured to have a first light deflection element deflecting the input light at an angle appropriate to a position of an designated port with an applied first drive voltage; and a second light deflection element finely adjusting a deflection angle of the light output from the first deflection element to the designated port with an applied second drive voltage such that power of light output from the designated port becomes maximum.
Claims13
An optical switch which deflects input light to thus 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 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 power of light output from the designated port becomes maximum.
An optical switch drive voltage control method for controlling drive voltages to first and second light deflection elements of an optical switch comprising the 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 the 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 power of light output from the designated port, the method comprising:
- controllably supplying the first drive voltage to the first light deflection element as a first drive voltage;
- and
- controllably supplying the second drive voltage to the second light deflection element such that power of light output from the output port becomes maximum.
Dependencies are inferred from the claim text.