Regulation of preconduction current of a laser diode using the t

Details Regulation of preconduction current of a laser diode using the t Regulation of preconduction current of a laser diode using the t

1993-07-20

1994-06-21

Bovernick, Rodney B.

Coherent light generators

Particular beam control device

Having particular beam control circuit component

372 33, 372 38, H01S 3133

Patent

active

053234081

ABSTRACT:
A process for controlling the preconduction current of a laser diode that operates in conjunction with a monitor diode in a control circuit with operational amplifiers, comprising signal processing filters, an electric supply unit such as, e.g., a power source, and a zero crossing detector, where the laser diode (5a) is driven by a linear current ramp signal provided by the supply unit, that the output signal (16) of the monitor diode (15) is differentiated three times, and that, when a zero crossing of the triple-differentiated monitor diode output signal (16) is detected, an optimum current of the current ramp signal is retained by the action of the zero passage detector.

REFERENCES:
patent: 898702 (1992-06-01), Slawson
patent: 4344173 (1982-08-01), Straus
patent: 4612671 (1986-09-01), Giles
patent: 4680810 (1987-07-01), Swartz
patent: 5027362 (1991-06-01), Hokanson et al.
patent: 5062114 (1991-10-01), Ito
"Optische Sender mit Halbleiterlasern fur hohe Bitraten", P. Marten, Elektronik 22/5.11.82, pp. 89-94.

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