We have prototyped optical fibers in which the glass diameter is 80 microns and the coating diameter has been reduced to as small as 125 microns. These fibers enable up to twice as many optical interconnects in a given footprint, which will allow transceiver arrays to be collinearly located on small chips with dimensions on the order of (5x5mm2)1. We have also incorporated these reduced diameter fibers into small form-factor, flexible 8-fiber ribbons which can enable as much as a 3x increase in fiber density and can simplify routing constraints inside modules and optical backplanes.
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Scott R. Bickham, Magdalena Przemyska, Jakub Krawczyk, Radawan Ripumaree, Julie A. Chalk, Mark T. Paap, William C. Hurley, "Reduced diameter fibers for high-density optical interconnects," Proc. SPIE 10538, Optical Interconnects XVIII, 105380V (22 February 2018);