Integrated optic device

Details Integrated optic device Integrated optic device

1976-07-28

1978-04-04

Corbin, John K.

350 9615, 350151, 350162R, G02B 514

Patent

active

040824241

ABSTRACT:
A solid state apparatus for and a method of (1) coupling a light beam to a dielectric waveguide, (2) modulating the intensity of the coupled, diffracted light beam, and (3) multiplexing the coupled, diffracted light beam within the waveguide to any one of several detectors. The apparatus uses a liquid-phase epitaxially (LPE) grown film of bismuth substituted rare earth iron garnet to form a magnetizable layer in which stripe domains may be generated, sustained and moved about. The stripe domains from a diffraction grating, the stripe domain width and orientation of which may be altered by the application of external magnetic fields--see the E. J. Torok, et al., U.S. Pat. No. 3,752,563. The altered stripe domains are, in turn, utilized to alter the coupling of the light beam to the waveguide and to alter the direction that the coupled, diffracted light beam is directed within the waveguide.

REFERENCES:
patent: 3752563 (1973-08-01), Torok et al.
patent: 3985423 (1976-10-01), Tseng
patent: 3990776 (1976-11-01), Tseng et al.
"Thin-film optical magnetic mode conventers" by R. D. Henry in Apl. Phys. Letts., vol. 26, No. 7, Apr. 1975, pp. 408-411.

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