Challenges and progress toward a silicon-based multi-microring optical network-on-chip. - Nicola Andriolli; Isabella Cerutti; Paolo Pintus; Mirco Scaffardi; Diego Marini; Giovanni Battista Montanari; Fulvio Mancarella; Matteo Ferri; Roberto Balboni; Gabriele Bolognini (EuCNC, 2014)