We propose a chip-scale silicon photonics transceiver using multimode optical wiring to realize low-cost and high-productivity
optical interconnection usable for several short-reach applications. We also present hybrid-integrated low-power-
consumption chip-scale optical transmitters/receivers called “optical I/O cores.” The optical I/O cores provide
clear eye opening in a wide range of temperature operation without clock data recovery. We show the design of one such
optical I/O core and evaluate its performance for a wide range of temperatures. Finally, we introduce an example of LSI
system based on the optical I/O approach.
This paper focuses on latest progress in experimental and theoretical studies on silicon-based carrier-depletion PN-junction phase shifters in terms of high modulation efficiency for energy-efficient photonic networks of high transmission capacity. Modulation efficiency of rib-waveguide phase shifters having various PN-junction configuration are characterized with respect to DC figure of merit defined for phase shifters using carrier-plasma dispersion as the physical principle of refractive-index modulation. In addition, RF drive voltage required for 10-Gb/s on-off keying is characterized for rib-waveguide phase shifters including lateral and vertical PN-junction configurations.