Arrangement for the direct conversion of items of data stored in

Details Arrangement for the direct conversion of items of data stored in Arrangement for the direct conversion of items of data stored in

1975-07-21

1977-07-19

Pitts, Harold I.

Dynamic magnetic information storage or retrieval

Head

Read only detector using light for reading magnetically...

350 96WG, G02B 514

Patent

active

040372634

ABSTRACT:
Magnetically stored data, for example data stored on a magnetic tape is converted directly into optical signals by an arrangement which comprises a magneto-optical modulator and a wave guide laser. The wave guide laser has an index of refraction n.sub.2 and is arranged on a transparent substrate which has an index of refraction n.sub.3 by epitaxial growth. The magneto-optical modulator has an index of refraction n.sub.1 and is applied as an epitaxial growth to the wave guide laser. The indices of refraction fulfill the condition that n.sub.1 > n.sub.2 > n.sub.3.

REFERENCES:
patent: 3868589 (1975-02-01), Wang
patent: 3947087 (1976-03-01), Furuta
J. E. Goell, Barium Silicate . . . Optical Circuits, Apr. 1973, Applied Optics.
Nahory et al., Beam Deflection . . . Hetero Structures Appl. Phyys. Lett., vol. 23, No. 10, Nov. 15, 1973.

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