TUNABLE LASER AND METHOD TO TUNE A WAVELENGTH OF A LIGHT EMITTED BY THE LASER

摘要

A tunable laser (101) comprising a gain medium (144), wherein the optical tunable filter (150) includes: applying the voltage difference for one or more consecutive driving time interval, each lasting less than 1 ps, varying the voltage difference applied between the first and second electrodes within each said driving time interval so that a maximum applied voltage difference is reached and said maximum applied voltage is above 0.1 kV.