Opto-acoustic switching device esp. for heterodyne interferometer

摘要

The device includes an optics layer (5), in which at least one light wave conductor (11) with an input (13) and an output (15) is formed. A corresponding piezo-electric layer (7) is provided with electrodes (9) for the production of an acoustic wave. The light wave conductor is arranged in such way, that a Bragg light refraction with optics frequency shift appears in the area of the acoustic wave. A further light wave conductor (21) is formed in the optics layer, which leads the refracted light wave to a second output (23), so that the input is selectively connected with the first or the second output through activation and/or deactivation of the electrodes.