ACOUSTOOPTICAL WAVEGUIDE DEVICE FOR WAVELENGTH SELECTION

摘要

An acoustooptical wavelength device for wavelength selection comprising one substrate (30) of a birefringent and photoelastic material on which there is formed: a first and a second rotation stages of the polarization plane of an optical signal in a first wavelength interval, wherein each stage comprises at least one optical waveguide (35, 36) traveled over by the signal; at least one optical waveguide, connecting the two stages and carrying one single polarizer consisting of an evanescent-wave polarization coupler (40); at least one optical waveguide carrying one polarizer (37) being finally provided downstream of the second stage.