Abstract
Within the working group, Device Modeling, of the European COST-216 project, various numerical techniques for modeling integrated optic S bends and directional couplers have been compared.1-3 The problem set was chosen on the basis of the availability of reliable experimental results. The directional couplers fabricated by the Heinrich Hertz Institute are based on InGaAsP waveguide grown on an InP substrate. The S bend containing offsets was made by the Dr. Neher Laboratory of the Dutch PTT and by the Technical University of Delft by using ion-beam milled waveguides with a sputtered Al2O3 core and a SiO2 cladding on a silicon wafer.
© 1991 Optical Society of America
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