Method and device for adjusting a laser

Details Method and device for adjusting a laser Method and device for adjusting a laser

2008-07-22

2008-07-22

Harvey, Minsun (Department: 2828)

Coherent light generators

Particular component circuitry

Controlling current or voltage to laser

C372S038010

Reexamination Certificate

active

10485755

ABSTRACT:
The aim of the invention is to adjust the operating point of a laser that can be modulated by a data signal. The operating point of the laser is adjusted by regulating a direct current flowing through the laser; whereby said direct current correlates with the optical characteristics of the laser. In order to carry out said adjustment, the direct current is controlled above an alterable threshold current. A differential current defined from the difference between the direct current and the threshold current or a variable correlating with the differential current is adjusted to a constant value or one that is solely dependent on temperature for the adjustment of said operating point.

REFERENCES:
patent: 5402433 (1995-03-01), Stiscia
patent: 5488621 (1996-01-01), Slawson et al.
patent: 5850409 (1998-12-01), Link
patent: 6292497 (2001-09-01), Nakano
patent: 2002/0172240 (2002-11-01), Kwark
patent: 0 539 038 (1993-04-01), None
International Search Report, International Application No. PCT/DE01/03468, International Filing Date Sep. 5, 2001, 3 pgs.

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