Patent ID: 7558301
Filing Date: 2009-07-07
Classification: B82Y,H01S

Abstract:
1. A multiwavelength semiconductor laser array, applicable for generating lasers of multiple wavelengths under a bias current, comprising: a substrate; and a plurality of laser resonators, formed on the substrate and having a plurality of corresponding resonant cavities, wherein each of the laser resonators comprises an active region for generating a single-wavelength band laser, the active region is formed by alternately stacking a plurality of quantum dot layers and a plurality of quantum dot capping layers, and the laser resonators have at least two different cavity lengths; wherein the active region comprises a plurality of spacer layers, the quantum dot layer is sandwiched between the spacer layer and the quantum dot capping layer to form a periodic structure unit; and wherein the active region further comprises a plurality of wave band regions for generating different emission wavelengths, and the wave band regions are formed by stacking a plurality of periodic structure units.