We review recent developments in directly modulated lasers (DMLs) with low operating
energy for datacom and computercom applications. Key issues are their operating energy …

By way of a brief review of Si photonics technology, we show that significant improvements
in device performance are necessary for practical telecommunications applications. In order …

This paper presents our recent progress with the integration of silicon (Si) photonic devices
for optical telecommunications. To integrate Si wire waveguides, germanium (Ge) …

On the silicon (Si) photonic platform, we monolithically integrated a silica-based arrayed-
waveguide grating (AWG) and germanium (Ge) photodiodes (PDs) using low-temperature …

A compact on-chip reconfigurable multichannel amplitude equalizer based on cascaded
elliptical microrings is proposed and demonstrated experimentally. With the optimized …

We demonstrate monolithic integration of a 50-μm-long-cavity membrane distributed-
reflector laser with a spot-size converter, consisting of a tapered InP wire waveguide and an …

We demonstrate the generation and demultiplexing of quantum correlated photons on a
monolithic photonic chip composed of silicon and silica-based waveguides. Photon pairs …

We demonstrate a compact, single-chip 40-channel, dense wavelength division multiplexing
(DWDM) variable attenuator multi/demultiplexer (VMUX/DEMUX) by monolithic integration of …

The defect mode, which exists at the defect layer of a one-dimensional photonic crystal
(1DPhC) heterostructure, provides the possibility of realizing narrowband transmission …

Integrated quantum photonics is now seen as one of the promising approaches to realize
scalable quantum information systems. With optical waveguides based on silicon photonics …