Patent ID: 8422530
Filing Date: 2013-04-16
Classification: H01S

Abstract:
1. A laser module comprising: a substrate; an gain unit disposed on the substrate and oscillating a first laser light; an internal resonance reflecting unit for selectively producing an output laser light and selectively reflecting second laser light to the gain unit, based upon the first laser light, the internal resonance reflecting unit including a comb reflecting unit that includes a ring resonator, the ring resonator including a ring resonance waveguide that receives the first laser light and carries the first laser light in a clockwise direction or a counter-clockwise direction therewithin; an external resonance reflecting unit receiving the second laser light from the gain unit and selectively reflecting wavelengths of the second laser light at a position external to the substrate and adjacent to one side of the gain unit; and a modulating unit for receiving and modulating the output laser light, wherein the internal resonance reflecting unit is disposed at a position on the substrate between the modulating unit and the gain unit.