Abstract
An application of nonplanar metalorganic chemical vapor deposition (MOCVD) growth to the monolithic integration of a buried ridge stripe (BRS) type distributed feedback (DFB) laser and a passive waveguide is described. The vapor phase properties have been used to butt-join a passive guide layer and an active laser layer grown successively, without growth pause. CW threshold currents as low as 17 mA have been achieved for a 1.3 mm long monolithic device. The coupling coefficient is in excess of 60%. >
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