Waveguide-type acoustooptic device

Details Waveguide-type acoustooptic device Waveguide-type acoustooptic device

1990-09-25

1992-01-28

LaRoche, Eugene R.

Optical waveguides

Directional optical modulation within an optical waveguide

Acousto-optic

359305, 359285, 385 1, G02F 111, G02B 610

Patent

active

050838563

ABSTRACT:
A light beam is introduced into an optical waveguide on a substrate of LiNbO.sub.3, and diffracted by a surface elastic wave generated by a tilted-finger chirped interdigital transducer on the optical waveguide. The direction in which the light beam is guided through the optical waveguide is substantially aligned with the z-axis of the LiNbO.sub.3 substrate. The light beam diffracted by the surface elastic wave and emitted out of the optical waveguide is applied to an optical member, such as a polarizing plate, a pinhole plate, or a light shield plate, which passes only a linear polarized component of the diffracted light beam.

REFERENCES:
patent: 3822929 (1974-07-01), Heidrich et al.
patent: 3951509 (1976-04-01), Noguchi et al.
patent: 3953107 (1976-04-01), Yano et al.
patent: 4900113 (1990-02-01), Hatori

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