US Patent 7254146 Continuous wavelength tuning of DBR laser

A continuous tunable laser system includes at least one DBR laser. The DBR laser includes a Phase section, a Braggs section, and a gain medium. The DBR laser is capable of generating a continuous-wave laser signal. A Phase current input is electrically connected to the Phase section. A Bragg current input is electrically connected to the Bragg section and synchronized with the Phase current input. A gain control input is electrically connected to the gain medium.