Nobuaki Hatori

TL;DR: In this article, an index-guided InGaAs/GaAlAs vertical-cavity surface-emitting laser with a native oxide confinement structure has been proposed and fabricated.

TL;DR: In this article, the authors studied the injection current dependence of room-temperature lasing spectra of a 1.3-μm self-assembled InAs∕GaAs quantum-dot laser both experimentally and theoretically.

TL;DR: In this article, a hybrid integrated light source fabricated on a Si platform using a spot-size converter (SSC) with a trident Si waveguide was achieved with merely the simple planar form of a Si waveguarded with no use of complicated structures such as vertical tapers or an extra dielectric core overlaid on the waveguide.

TL;DR: In this paper, a novel polarization control method using a birefringent metal/dielectric (semiconductor) polarizer has been proposed for the purpose of controlling the polarization state of vertical-cavity surface-emitting lasers (VCSEL's).

TL;DR: In this paper, the authors studied small-signal modulation characteristics of 1.3μm InAs∕GaAs self-assembled quantum-dot lasers in terms of the modulation efficiency and the K factor as a function of the photon lifetime.