Fujitsu Corporation

Ryosuke Namazu

Nobuhiro Inagaki

Michio Ishihara

Takayuki Nakayama

Eiichi Kitamura

An optoelectronic semiconductor device for use in an optical transmission system, comprising: an optoelectronic semiconductor element; an element housing which seals covers said element; and an optical fiber arranged through a through hole which is formed in said element housing. An end of said fiber faces said element, while the other end thereof projects out of said element housing by a predetermined length. The device is characterized in that a light absorbing material is disposed around said optical fiber within said element housing. Said material substantially absorbs the light emitted from or received by said optoelectronic semiconductor element.

Optoelectronic semiconductor device

An optoelectronic semiconductor device for use in an optical transmission system comprises a stem for mounting an optoelectronic semiconductor element thereon and a cap within which an optical fiber, optically communicating with the optoelectronic semiconductor element, is arranged. An end of the optical fiber within the cap is exposed on the cap surface. A screw is formed on the outer suface of the cap and a nut, which engages the screw, is provided for optically connecting optical transmission fiber with the optical fiber within the cap.

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Yokohama, Japan

Ryosuke Namazu