Photonic crystal slow light devices fabricated by CMOS-compatible process

Abstract

We have studied wideband dispersion-free slow light in photonic crystal waveguides and other photonic nanostructures, which allows tunable delays in short optical pulses and the enhancement of light-matter interaction. This paper demonstrates the state-of-the-art devices fabricated by CMOS-compatible process, where compact devices of 200 - 400 μm lengths are integrated with Si photonics components and controlled by DC and AC electronics. They are applied for dispersion controllers, optical correlators, DQPSK receivers, retiming of pulse train, two-photon absorption photo-diodes and Mach-Zehnder modulators. © IEICE 2013.