Nanostructured silicon photonics devices fabricated by CMOS-compatible process

Photonic nanostructures have been studied toward strong control of light emission and propagation as well as large-scale photonic integration on a chip. One of the attractive functions available with these structures is generating slow light. It flexibly changes the group velocity and delay of light, and also enhances light-matter interactions. A recent important progress in this field is that now these structures can be fabricated by using CMOS-compatible process. It enables multilayer mask process, large scale integration and sophisticated functionality. This talk will present on-chip tunable delay lines and tunable dispersion compensators, both of which are electrically controllable, nonlinear-based ultrafast delay tuning applicable to retiming of fast optical signals, on-chip optical correlator with a fast delay scanner, symbol-rate-variable DQPSK coherent receiver, efficient two-photon-absorption photo-diodes and fast and very compact MZ modulators.