28 July 1994 Grating-assisted waveguide chip-to-chip interconnects
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Abstract
This paper examines two different approaches for grating assisted optical interconnects between waveguides composed of dissimilar materials, i.e. evanescent and projection coupling. For evanescent coupling the waveguides have to be sufficiently close to allow overlap of the optical modes, whereas projection coupling has the advantage of allowing the waveguides to be separated by a much larger distance. In both cases we assume that phase matching is achieved using surface relief gratings. This paper compares the performance of these two methods using theoretical modelling. Results show the effects of nonparallelism with regard to the manufacture of interconnecting networks. For projection coupling an optimal design for the grating structure is proposed which combines high efficiency and device compactness.
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Gordon S.F. Chan, Gordon S.F. Chan, Ming Li, Ming Li, Stephen J. Sheard, Stephen J. Sheard, } "Grating-assisted waveguide chip-to-chip interconnects", Proc. SPIE 2213, Nanofabrication Technologies and Device Integration, (28 July 1994); doi: 10.1117/12.180971; https://doi.org/10.1117/12.180971
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