The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 05, 1997
Filed:
Jun. 07, 1995
Applicant:
Inventor:
Michael Schilling, Stuttgart, DE;
Assignee:
Alcatel N.V., , NL;
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
385 16 ; 385 45 ; 385131 ;
Abstract
A method for producing a cascaded optical space switch and a cascaded optical space switch manufactured with this method are shown being made of many optical branches produced on a single substrate. Here a method is used for growing active, i.e., controllable light amplifying or light absorbing waveguide areas, which can produce locally restrictable different layer thicknesses and/or material compositions of the grown active layers, during the same operation. The number and location of active (1, 3) and passive (2, 4) waveguide areas can be determined by the configuration of areas (M), e.g., masked with SiO.sub.2, prior to the actual growth.