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:
Mar. 22, 2005
Filed:
Jun. 10, 2002
Geoff Randall, Ottawa, CA;
Paul Colbourne, Ottawa, CA;
David Moss, Orleans, CA;
Michael R. E. Lamont, London, GB;
Sheldon Mclaughlin, Ottawa, CA;
Geoff Randall, Ottawa, CA;
Paul Colbourne, Ottawa, CA;
David Moss, Orleans, CA;
Michael R. E. Lamont, London, GB;
Sheldon McLaughlin, Ottawa, CA;
JDS Uniphase Inc., Ottawa, CA;
Abstract
A method and device is disclosed for relaying a narrow diameter collimated optical beam carrying optical communication signal channels between a multilayer interference filters and another reflective surface avoiding signal loss by routing the optical beam to compensate for beam broadening caused by the multilayer interference filter. The method and device are particularly applicable to dispersion compensating filters, especially those wherein one filter is tunable, in that a controllable amount of dispersion is introduced to offset or compensate dispersion. Preferably one of the filters is a tunable periodic device in the form of a multi-cavity etalon structure. In a preferred embodiment of the filters can be designed to provide various controllable but different constant amounts of dispersion.