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. 23, 2012
Filed:
Apr. 03, 2008
Andrew John Ward, Moulton, GB;
Robert Walker, Northamptonshire, GB;
David James Robbins, Towcester, GB;
Douglas Charles John Reid, Rugby, GB;
Guy Towlson, Bolton, GB;
Andrew John Ward, Moulton, GB;
Robert Walker, Northamptonshire, GB;
David James Robbins, Towcester, GB;
Douglas Charles John Reid, Rugby, GB;
Guy Towlson, Bolton, GB;
Oclaro Technology Limited, Northamptonshire, GB;
Abstract
The present invention concerns tunable distributed Bragg reflector (DBR) semiconductor lasers, in particular a DBR laser with a branched optical waveguidewithin which a plurality of differently shaped lasing cavities may be formed, and a method of operation of such a laser. The laser may comprise a phase control section (), gain section (), a sampled grating DBR () giving a comb-line spectrum and two tunable, chirped DBRs () for broadband frequency training and a coupling section ().