Many different types of components used in optical communication systems need to be interconnected with high efficiency and insensitivity to misalignments. The problems of coupling inefficiency and component misalignments are aggravated when devices made from dissimilar technologies are assembled into bybrid packages. Difficulties in interconnecting these elements are responsible for the increased cost and complexity of many systems. In this paper we analyze the use of single mode passive polymer waveguides as mode transformers between devices having differing geometries and materials. We then look at an example of a hybrid optical switch to illustrate some of the packaging issuse. Finally we present results for a Monte-Carlo simulation which shows the effects of component misalignments in the hybrid switch.
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