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:
Oct. 15, 2002
Filed:
Apr. 21, 2000
Applicant:
Inventors:
Richard Ian Laming, Edinburgh, GB;
Michael Kevan Durkin, Worcestershire, GB;
Morten Ibsen, Hampshire, GB;
Assignee:
Pirelli Cavi e Sistemi S.p.A., Milan, IT;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 2/100 ;
U.S. Cl.
CPC ...
G01N 2/100 ;
Abstract
An optical waveguide grating if formed in a waveguide of nominally uniform diameter. A grating characteristic is varied at positions along the grating in a substantially inverse relationship to the diameter of the waveguide at those positions.