Patent · US Expired

Driver circuit for a laser

US5297157A · kind A · utility

10Cited by

3References

7Claims

0Family size

Assignee

Alcatel N.V. · NL

Inventors

Norbert Kaiser · Markt Taschendorf, DE
Werner Manz · Echterdingen, DE

Key dates

Filing date	Mar 19, 1993
Grant date	Mar 22, 1994
Priority date	—
Expiry date	Mar 19, 2013

Classification

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

Abstract

A driver circuit for a laser includes a first differential amplifier with a first controlled current source, and at least one second differential amplifier with an associated second controlled current source. The at least one second differential amplifier is connected in parallel with the first differential amplifier so that the laser is a common load of the first and the at least one second differential amplifiers. A control circuit controls the current sources based on an external control voltage.

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