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:
Jun. 27, 1995
Filed:
Sep. 28, 1993
Applicant:
Inventors:
Laurence J St Ville, London, GB;
Nicholas J Parsons, Colchester, GB;
Stuart N Radcliffe, Brentwood, GB;
Assignee:
GEC-Marconi Limited, Stanmore, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
385 40 ;
Abstract
An optical filter comprises a light waveguide and an electrode structure located adjacent the waveguide. The electrode structure comprises a first ladder arrangement having a plurality of rungs disposed along the length of the waveguide and spaced apart from each other, each rung of the first ladder arrangement comprising a plurality of interdigitated electrode pairs. A second ladder arrangement has a plurality of rungs interleaved with the rungs of the first ladder arrangement and spaced apart from each other by a second pitch spacing that is different from the first pitch spacing.