Title :
Study of 1.3-μm tapered waveguide spotsize transformers
Author :
Uppal, Kushant ; Tishinin, Denis ; Kim, In ; Dapkus, P.Daniel
Author_Institution :
Dept. of Mater. Sci. & Electr. Eng., Univ. of Southern California, Los Angeles, CA, USA
fDate :
6/1/1997 12:00:00 AM
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
Keywords :
light polarisation; optical fabrication; optical fibre couplers; optical losses; optical waveguides; quantum well lasers; semiconductor growth; semiconductor quantum wells; vapour phase epitaxial growth; 1.3 mum; compressive quantum wells; coupling efficiency; dual polarization characteristics; fabrication technique; far-field pattern; laterally tapered waveguide structures; mesa shape; single-mode fiber coupling; spot-size transformation; tapered active region; tapered waveguide spotsize transformers; tensile quantum wells; waveguide losses; Optical device fabrication; Optical fiber devices; Optical fiber networks; Optical fiber polarization; Optical waveguide components; Optical waveguides; Semiconductor waveguides; Shape; Transformers; Waveguide lasers;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/2944.640652
