摘要 |
<p>The present invention concerns tunable distributed Bragg reflector (DBR) semiconductor lasers, in particular a DBR laser with a branched optical waveguide 5 within 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 (418), gain section (420, 422), a sampled graiting DBR (412) giving a comb-line spectrum and two tunable, chirped DBRs (414, 416) fro broadband frequency training and a coupling section (410).</p> |
申请人 |
BOOKHAM TECHNOLOGY PLC;WARD, ANDREW;WALKER, ROBERT;ROBBINS, DAVID, JAMES;REID, DOUGLAS;TOWLSON, GUY |
发明人 |
WARD, ANDREW;WALKER, ROBERT;ROBBINS, DAVID, JAMES;REID, DOUGLAS;TOWLSON, GUY |