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:
Dec. 04, 2001
Filed:
Apr. 27, 1999
Applicant:
Inventor:
Arnold Peter Roscoe Harpin, Oxford, GB;
Assignee:
Bookham Technology plc, Oxfordshire, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F 1/01 ;
U.S. Cl.
CPC ...
G02F 1/01 ;
Abstract
An optical waveguide, such as a rib waveguide, having a first portion (,) to which a dopant (,) and/or a metal layer (,) is applied to enable an optical property of a second portion of the waveguide to be altered, the first portion (,) having a structure, e.g. being corrugated, the geometry of which is such as to prevent an optical wave being carried in the first portion (,). The dopant (,) and/or metal layer (,) can thus be positioned close to the second portion which carries the optical wave without causing perturbation, e.g. attenuation and/or polarization, of the optical wave.