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:
Nov. 09, 1999
Filed:
Mar. 24, 1998
Applicant:
Inventors:
Yingchao Yan, Eindhoven, NL;
Anne Jans Faber, Veldhoven, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
385141 ; 385142 ; 385129 ; 372 40 ;
Abstract
The present invention relates to a planar optical waveguide device, especially an optical amplifier, comprising: a substrate (11); an active guiding layer (13) arranged on the substrate (11); a bottom layer (12) arranged between the active guiding layer (13) and the substrate (11); a top cladding layer (14) arranged over the active guiding layer (13). According to the invention, the active guiding layer (13) has the following composition: