Other

Mitsubishi Kasei Corporation

Director General Agency of Industrial Science and Technology

Yoshihiro Suzuki

Kenji Shimoyama

Hideki Gotoh

Junichi Shimada

Hiroyoshi Yajima

Mitsuaki Shimizu

A semiconductor optical pulse compression waveguide with a novel structure that can greatly reduce its size, and be simply fabricated. The semiconductor optical pulse compression waveguide is composed of a semiconductor optical waveguide which guides an optical signal and includes an optical pulse compression region. The optical pulse compression region includes at least one saturable amplifier region that loses its amplification characteristic after amplifying a fixed amount of optical energy, and at least one saturable absorber region that loses its absorption characteristic after absorbing a fixed amount of optical energy, where the saturable amplifier region and the saturable absorber region are disposed alternately in series in the optical pulse compression region.

Semiconductor optical pulse compression waveguide

Disclosed is a divided electrode type semiconductor layer device designed to improve the separation of electrodes without reducing the amount of doping for carrier injection layers. A double-hetero-structure is formed on a semi-insulating substrate, and at least two pairs of carrier injection clad layers are thereafter buried like lands while a high-resistance portion is left between the carrier injection clad layers to electrically separate these layers. The electrodes are respectively formed on the separated carrier injection layers.

Divided electrode type semiconductor laser device

Growing community of inventors

Tsukuba, Japan

Yoshihiro Suzuki