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We present experimental evidence to demonstrate the feasibility of a promising new quasi-phase-matching technique in AlGaAs multiple-quantum-well waveguides. Non-phase-matched second-harmonic-generation measurements indicate that, for sub-half-bandgap excitation near 1.5 microm , quantum-well intermixing by impurity-free vacancy disordering results in a reduction of the nonlinear susceptibility chi((2))(zxy) (~340 pm/V) by 17%. Relatively low intermixed waveguide losses, and the high spatial resolution of the impurity-free vacancy disordering process, suggest that periodic intermixing along the direction of propagation should lead to useful frequency-conversion efficiencies.

We demonstrate one of the first monolithically integrated multiwavelength lasers fabricated in an industrial fab according to generic foundry model. Our devices were realized on an indium phosphide (InP)-based platform and use an arrayed waveguide grating (AWG) as intra-cavity filter. The designed sources generate wavelengths around 1.55 μm with optical output power up to 5 dBm and side-mode suppression ratio (SMSR) better than 40 dB.

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