Arrangement for the direct conversion of items of data stored in magnetic form into optical signals
US4037263A · kind A · utility
4Cited by
2References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 21, 1975 |
| Grant date | Jul 19, 1977 |
| Priority date | — |
| Expiry date | Jul 21, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/1066
- WIPO fieldOptics
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.