×

Tunable hybrid laser with carrier-induced phase control

  • US 9,318,868 B2
  • Filed: 09/06/2012
  • Issued: 04/19/2016
  • Est. Priority Date: 09/07/2011
  • Status: Active Grant
First Claim
Patent Images

1. A tunable laser comprising:

  • a substrate comprising a silicon material and a recess;

    a gain medium disposed in the recess in the substrate, wherein the gain medium includes a compound semiconductor material;

    a waveguide disposed in the substrate and optically coupled to the gain medium;

    a first wavelength selective element characterized by a first reflectance spectrum and disposed in the substrate;

    a carrier-based phase modulator optically coupled to the first wavelength selective element, wherein the carrier-based phase modulator introduces charge carriers into a wave-guiding portion of the tunable laser between the gain medium and the first wavelength selective element to extinguish lasing of the tunable laser;

    a second wavelength selective element characterized by a second reflectance spectrum and disposed in the substrate, wherein the second reflectance spectrum overlaps a portion of the first reflectance spectrum such that the tunable laser operates at a single-mode output;

    an optical coupler disposed in the substrate and optically coupled to the first wavelength selective element, the second wavelength selective element, and the waveguide;

    an output mirror; and

    a phase adjustment section for correction of phase misalignment.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×