Patent ID: 8995480
Filing Date: 2015-03-31
Classification: H01S

Abstract:
1. A tunable laser module, comprising: a light gain area unit configured to output an optical signal; an optical distributor configured to separate the optical signal output from the light gain area unit; two comb reflection units configured to reflect a part of optical signals separated by the optical distributor and allow a part of the optical signals to penetrate; two phase units configured to change phases of the optical signals penetrating the two comb reflection units; an optical coupler configured to combine the optical signals of which the phases are changed by the two phase units; and an optical amplifier configured to amplify the optical signal combined by the optical coupler, wherein the light gain area unit oscillates a laser by totally reflecting the optical signals reflected by the two comb reflection units, and wherein output terminals of the two comb reflection units are used as arms of a Mach-Zehnder optical modulator, and the two phase units serve as the Mach-Zehnder optical modulator by adjusting the phases of the optical signals penetrating the two comb reflection units.