Abstract
The authors propose a novel quasi-symmetrical twin guide GaAs/AlGaAs laser structure (QSTGL) with a low-loss external passive waveguide. The device is tolerant to fabrication misalignment and therefore well suited for monolithic integration. Threshold current densities of less than 1.1 kA/cm 2 and a coupling efficiency between 70 and 80% into the low-loss passive waveguide are achieved
Published Version
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