Patent ID: 8665917
Filing Date: 2014-03-04
Classification: H01S

Abstract:
1. Method for calibrating a tunable semiconductor laser ( 121 ; 10 ) comprising at least a phase section ( 12 ) and at least a first Bragg reflector section ( 14 a , 14 b ), through which sections a phase current and a first reflector current, respectively, is applied, which laser ( 121 ; 10 ) is not actively temperature stabilized, said method comprising the steps of a) selecting at least one phase current; b) identifying for one particular phase current, selected among the phase current or currents selected in step a), a range ( c) scanning the reflector current or currents over at least the range ( d) identifying, for each phase current as used in step c), at least one stable operating point ( e) identifying and storing into a memory at least one stable, continuous tuning line ( f) calibrating the laser frequency by scanning along said identified tuning line ( g) measuring the temperature of the laser ( h) storing into the memory the temperature of the laser (