Abstract
For simplifying the fabrication and operation of multiwavelength laser arrays, sampled grating distributed Bragg reflector (SGDBR) lasers are utilized to form the arrays, where the two SGDBR mirrors of each laser are fabricated on waveguides of different thicknesses. Fabrication of such laser arrays requires a single step of holographic exposure to realize the gratings. The lasers in an array can output wavelength combs of narrow wavelength spacing without the necessity of coarse tuning to the mirrors. We demonstrate monolithically integrated 16-wavelength laser arrays of which the wavelengths are aligned to the International Telecommunication Union grid with single-electrode operation.
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