Electro-optical scanner

Details Electro-optical scanner Electro-optical scanner

1991-12-11

1992-09-22

Ullah, Akm E.

Optical waveguides

Directional optical modulation within an optical waveguide

Acousto-optic

25022724, G02B 600

Patent

active

051504375

ABSTRACT:
Electro-optical Scanner comprising an optical waveguide (41) and an acoustic waveguide (42), arranged on a transparent substrate (40) and being colinear with respect to each other, for deflecting light waves out from the optical waveguide (41) by colinear acousto-optic interaction of the light waves (44) with a short surface acoustic wave traveling diffraction grating (43) propagating in the acoustic waveguide (42). The short traveling diffraction grating (43) is generated by a wide band transducer. Different applications of the electro-optical scanner are possible.

REFERENCES:
patent: 4394060 (1983-07-01), Verber et al.
patent: 4425023 (1984-01-01), Mataumoto et al.
patent: 4453801 (1984-06-01), Verber et al.
patent: 4470661 (1984-09-01), Matsumoto
patent: 4762383 (1988-08-01), Yamashita et al.
patent: 4797867 (1989-01-01), Sunagawa et al.
J. Phys. D:Appl. Phys., vol. 10, 1977, GB, pp. 1833-18451 F. R. Geelier: "A coliner thin-film acousto-optic scanner".
ICCC/ICICE Global Telecommunications Conference vol. 2, Nov. 15, 1987, pp. 1305-1390; Tokyo, JP; N. Gotto et al.: "Wavelength-multiplexed optical switching system using acousto-optic switches".
European Search Reprot EP 90 91 0990.

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