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:
Oct. 19, 1993
Filed:
Dec. 02, 1991
Fujitsu Limited, Kawasaki, JP;
Abstract
A driver circuit of a laser diode. The laser diode has a first electrode structure for injecting a first drive current with a first magnitude and a second electrode structure separated from the first electrode structure for injecting a second drive current with a second magnitude. The second electrode structure is provided in correspondence to a location in diode at which said carriers are depleted most. The driver circuit comprises a presetting circuit for presetting a relationship between the first and second magnitudes, and a current distribution circuit controlled by the presetting circuit for producing the first and second drive currents with respective magnitude satisfying the relationship that is preset by the presetting means.