Optical read-write head with diffraction grating structure

Details Optical read-write head with diffraction grating structure Optical read-write head with diffraction grating structure

1989-07-10

1992-01-21

Arnold, Bruce Y.

Optical waveguides

Integrated optical circuit

385 37, 359566, 359 15, 369109, 369103, G02B 634, G02B 612, G11B 7135

Patent

active

050823396

ABSTRACT:
The invention relates to a holographic optical component and its use for reading the writing/reading heads. This application requires a minimum size and low weight for the holographic optical components. This is achieved in accordance with the invention by arranging a laser element and a grating structure, which is integrated on a waveguide layer and acts as a holographic optical system, on a large-sized surface side of a flat carrier element such that a light beam of the laser element impinges directly on the grating structure and is so converted by the grating structure that it exits from the component.

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T. Suhara et al., "An Integrated-Optic Disc Pickup Device", IOOC-ECOC, 1985, pp. 117-120.
"Integrierte Optikzum Lesen von Optischen Disks", Laser Magazin, vol. 5, 1985, p. 75.

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