Abstract
Polymer multilayer optical interconnections have gained interest over the past few years in view of their
ability to increase the integration density, increase the routing flexibility, and make full use of the
characteristics of 2-D optoelectronic elements. The alignment between the functional elements in the different
optical layers has to be sufficiently accurate in ensuring a high overall efficiency of the system. Numerical
simulations have been used as a tool to determine whether laser ablation can be used as an alternative technology
for the structuring of the functional elements of optical interconnections into a polymer optical layer. The
experimentally achievable alignment accuracies are compared to tolerance ranges for an excess loss
≤ 1 dB obtained from the numerical study. The experimental
achievements show that the alignment accuracies fall within the numerical tolerance ranges and have a good
reproducibility. Experimental realizations of a two-layer multimode waveguide and inter- and out-of-plane-coupling
structures are discussed and shown.
© 2007 IEEE
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