| 摘要 |
PURPOSE: To provide an optical switch which can separately output wavelength multiplexed light beams. CONSTITUTION: A filter 3 where a plurality of interference filters 3a to 3c are juxtaposed is arranged in a groove part 2 crossing optical waveguides 14a and 14b. The wavelength multiplexed light beams which pass through the wavelength multiplexed optical waveguides 14a and 14b can be reflected or transmitted for each wavelength according to the optical property of the interference filters 3a to 3c by supplying a matching oil 25 filled in the groove part 2 by the drive of a micro pump 20 having a piezoelectric element 17 to move the filter 3.
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