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:
Jul. 01, 2008
Filed:
Feb. 28, 2003
Steven James Borley, Towcester, GB;
Andrew Cannon Carter, Blisworth, GB;
Steven James Borley, Towcester, GB;
Andrew Cannon Carter, Blisworth, GB;
Bookham Technology, PLC, Towcester, GB;
Abstract
A control () and a method of controlling a tunable laser having a gain section (), a phase change section () and a segmented Bragg grating reflector section () comprising a series of grating units (-) each of a different pitch, and an electrode (-) associated with each grating so that an electrical current is applicable to each individual grating. The control () includes a plurality of digitally controlled sources () of electrical current which are each connected to switch means (or) operable to independently connect each of said sources () to a respective electrode (e.g.or) associated with a grating (e.g.or) which is one of a subset of consecutive gratings (e.g.&) selected from said series of grating units (-).