The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 17, 2009
Filed:
Jun. 28, 2007
Takashi Ueda, Tokyo, JP;
Koji Yamada, Tokyo, JP;
Tomoki Nozawa, Tokyo, JP;
Yoshihiko Kobayashi, Tokyo, JP;
Takashi Ueda, Tokyo, JP;
Koji Yamada, Tokyo, JP;
Tomoki Nozawa, Tokyo, JP;
Yoshihiko Kobayashi, Tokyo, JP;
Oki Semiconductor Co., Ltd., Tokyo, JP;
Abstract
A semiconductor laser device includes a supporting substrate having a wiring pattern thereon; LD fixed on the surface of the supporting substrate and having a signal output section that emits signal laser light and a monitoring output section that emits monitoring laser light; and a monitoring PD. The monitoring PD includes a semiconductor substrate having a region that transmits light of the wavelength of the monitoring laser light; and a light receiving section for photoelectric conversion formed on the surface of the semiconductor substrate, one incident surface of the side surfaces of the semiconductor substrate arranged in a position to which the monitoring laser light can be made incident, the light receiving section arranged in a position higher than the monitoring output section, and a back surface of the semiconductor substrate and the wiring pattern fixed on the supporting substrate to oppose each other.