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:
Jun. 16, 1987
Filed:
Jul. 06, 1984
Applicant:
Inventors:
Jorg Angerstein, Flein, DE;
Elmar Wagner, Heilbronn, DE;
Stefanos Dermitzakis, Heilbronn-Neckargartach, DE;
Assignee:
Telefunken electronic GmbH, Heilbronn, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S / ;
U.S. Cl.
CPC ...
372 38 ; 372 29 ;
Abstract
A circuit arrangement for actuating semiconductor lasers with the transmitted optical power being controlled with the aid of a photodiode optically coupled to the laser radiation, whose amplified photoelectric current controls the current of the laser in such a way that its radiation capacity remains constant, is to be improved, in particular, such that the circuitry expenditure is low, the band width large and the operating point of the laser easy to set, and, furthermore, such that a digital or HF signal for modulation of the laser radiation can be coupled without difficulty.