Abstract
The use of microoptical imaging systems in combination with vertical cavity surface emitting laser arrays for parallel optical interconnects is described. Three generic interconnection systems are discussed: a conventional 4f system, a lenslet array based system, and a hybrid system which combines the former two. The hybrid system breaks up the imaging task in a favorable way. It relaxes the performance requirements of the single elements and some of the alignment tolerances of the whole system. Furthermore, the choice of different types of microlenses, that are particulary suited for the different sub-tasks in the hybrid system. allows one to optimize the system performance. Theoretical considerations are complemented with experimental results obtained with a 4 × 4 array of microlasers.
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