Patent · US Expired

Magneto-optical light switching element and method of manufacturing same

US4893909A · kind A · utility

4Cited by

8References

18Claims

0Family size

Assignee

U.S. Philips Corporation · US

Inventors

Peter Hansen · Appen, DE
Claus-Peter Klages · Braunschweig, DE
Klaus-Peter Schmidt · Bonn, DE
Wolfgang F. M. Tolksdorf · Tornesch, DE
Klaus Witter · Hamburg, DE

Key dates

Filing date	Mar 3, 1987
Grant date	Jan 16, 1990
Priority date	—
Expiry date	Mar 3, 2007

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S359/90
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A magneto-optical light switching element comprising islands which are formed from an epitaxial layer on the basis of bismuth-substituted rare earth metal iron garnet, which layer is provided on a nonmagnetic, optically transparent garnet substrate, integrated heating resistors being provided on the islands which are surrounded by a coil, the substrate being (100)-oriented and the coil being constructed as an integrated coil.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.