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:
Apr. 06, 2004
Filed:
Aug. 02, 2002
James Ronald Bonar, Erskine, GB;
Richard Ian Laming, Edinburgh, GB;
Alcatel Optronics UK Limited, West Lothian, GB;
Abstract
An optical waveguide ( ) with a multi-layer core ( ) comprises a substrate ( ), a composite core waveguide ( ) formed on the substrate ( ) and at least one upper cladding layer ( ) embedding said core waveguide ( ). The core waveguide ( ) is characterized by a composite core layer ( ) comprising a first core layer ( ) with a consolidation temperature T formed on the substrate ( ) and at least one other core layer ( ) formed on the first core layer ( ), wherein the softening temperature T of at is least one of said at least one other core layers ( ) is equal to or less than the consolidation temperature T of at least one underlying core layer ( ).