Patent · US Expired

Circuit arrangement for actuating semiconductor lasers

US4674093A · kind A · utility

13Cited by

4References

20Claims

0Family size

Assignee

Telefunken Electronic GmbH · DE

Inventors

Jorg Angerstein · Flein, DE
Elmar Wagner · Taufkirchen, DE
Stefanos Dermitzakis · Neckarsulm, DE

Key dates

Filing date	Jul 6, 1984
Grant date	Jun 16, 1987
Priority date	—
Expiry date	Jul 6, 2004

Classification

Technology area (CPC H)Electricity
CPC primaryH01S5/042
WIPO fieldOptics
WIPO sectorInstruments

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.