Abstract
Laterally tapered waveguide structures have been fabricated using a novel, though simple fabrication technique to achieve spot-size transformation. The effect of mesa shape on the far-field pattern and the coupling efficiency to a single-mode fiber (SMF) is reported. A tapered active region having both tensile and compressive quantum wells has been used and dual polarization characteristics are observed for the first time. An experimental analysis of the waveguide losses due to the taper has also been shown.
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