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. 29, 2003
Filed:
May. 25, 2001
Stephen William Roberts, Winchester, GB;
Bradley Jonathan Luff, Highfield, GB;
John Paul Drake, Lambourn, GB;
Stephen Geoffrey Unwin, Islip, GB;
Bookham Technology plc, Oxfordshire, GB;
Abstract
A rib waveguide structure comprising a layer ( ) of light conductive material defined between two planar faces with a rib ( ) formed on one of the faces and an optical component e.g. a tapered waveguide ( ) optically coupled to the other face. An inverted rib waveguide comprising a light conductive layer ( ) and a rib ( ) that projects from the light conductive layer ( ) into a substrate ( ) is also described as well as other optical devices comprising a light conductive layer separated from a substrate by a non-planar layer ( ) of light confining material and optical devices comprising two or more layers ( ) of light confining material buried within a rib with a light conducting component ( ) at least a part of which is formed between planes defined by the two layers of light confining material. A method of forming such devices is also described.