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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.:

US 5920587 B1

PDFFull Text
Date of Patent:
Jul. 06, 1999

Filed:

Feb. 18, 1997

Optical device and method of manufacturing the same

Applicant:
Inventors:

Hironobu Narui, Kanagawa, JP;

Masato Doi, Kanagawa, JP;

Kenji Sahara, Kanagawa, JP;

Yoshinobu Higuchi, Kanagawa, JP;

Assignee:

Sony Corporation, Tokyo, JP;

Attorney:

Hill & Simpson

Primary Examiner:

Rodney Bovernick

Assistant Examiner:

Yisun Song

Int. Cl.
CPC ...
H01S / ;
U.S. Cl.
CPC ...
372 50 ; 372 43 ; 257 84 ; 257 85 ;
Abstract

A semiconductor laser device having light output monitoring light-receiving portion can be fabricated monolithically. A semiconductor laser element (LD) composed of a first cladding layer (22), an active layer (23) and a second cladding layer (24) is formed on a semiconductor substrate (21). A light-receiving portion (PD.sub.1) of a pn junction is formed on the semiconductor substrate (21) disposed behind the semiconductor laser element (LD) by diffusion or selective growth.

Find Patent Forward Citations

Narui, Hironobu. (1999). Optical device and method of manufacturing the same (U.S. Patent No. 5920587). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5920587

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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