PT Unknown AU Lee, BG Doany, FE Assefa, S Green, W Yang, M Schow, CL Jahnes, CV Zhang, S Singer, J Kopp, VI Kash, JA Vlasov, YA TI 20-μm-pitch eight-channel monolithic fiber array coupling 160 Gb/s/channel to silicon nanophotonic chip SE Conf. OFC/NFOEC PY 2010 BP 1 EP 3 DE spot size converters; SSC; optical waveguides; optical fiber waveguides; ultra-dense silicon waveguide arrays; silicon waveguides; waveguide arrays; from chiralphotonics AB A multichannel tapered coupler interfacing standard 250-μm-pitch low-NA polarization-maintaining fiber arrays with ultra-dense 20-μm-pitch high-NA silicon waveguides is designed, fabricated, and tested, demonstrating coupling losses below 1 dB and injection bandwidths of 160 Gb/s/channel. ER