D. Israel et al., COMPARISON OF DIFFERENT POLYMERIC MULTIMODE STAR COUPLERS FOR BACKPLANE OPTICAL INTERCONNECT, Journal of lightwave technology, 13(6), 1995, pp. 1057-1064
This paper describes a comparison of three types of 8 x 8 multimode st
ar couplers made in polymeric multimode waveguides. Their geometry was
designed with a ray tracing tool, Measurements show low loss for all
designs, but a symmetrical design, based on a tree of Y-junctions yiel
ds the best uniformity.