Ultrafast all‐optical switching, possessing the unique function of light controlling light, is an
essential component of on‐chip ultrafast optical connection networks as well as integrated …

Although high-speed all-optical switches are expected to replace their electrical
counterparts in information processing, their relatively large size and power consumption …

This article reviews our recent studies of ultralow-power nanophotonics devices toward
implementing a dense optical communication network in a processor chip. A photonic crystal …

We demonstrate experimentally all-optical switching on a silicon chip at telecom
wavelengths. The switching device comprises a compact ring resonator formed by horizontal …

We demonstrate reduction of the free-carrier lifetime in a silicon nanowaveguide from 3 ns to
12.2 ps by applying a reverse bias across an integrated pin diode. This observation …

We experimentally demonstrate a photonic crystal structure that allows easy and robust
control of the Fano spectrum. Its operation relies on controlling the amplitude of light …

Microring resonators (MRRs) are promising devices for time-delay photonic reservoir
computing, but the impact of the different physical effects taking place in the MRRs on the …

The present work focuses on experimental investigations of a bistable silicon-on-insulator
(SOI) micro-ring resonator (MRR). The resonator exploits a continuous-wave operation of …

All-optical switches are among the most important parts of integrated photonics. Ultrahigh
speed and ultralow energy consumption are two necessary indexes of all-optical switches …

We utilize cross-phase modulation to observe all-optical switching in microring resonators
fabricated with hydrogenated amorphous silicon (a-Si: H). Using 2.7-ps pulses from a mode …