Electronic driver circuit for directly modulated...

Details Electronic driver circuit for directly modulated... Electronic driver circuit for directly modulated...

2005-05-31

2005-05-31

Harvey, Minsun Oh (Department: 2828)

Coherent light generators

Particular beam control device

Modulation

C379S029010, C379S030000, C379S038000, C379S038000, C379S038000

Reexamination Certificate

active

06901091

ABSTRACT:
An electronic driver circuit for a directly modulated semiconductor laser has a first circuit for generating a constant current and second circuit for modulating the constant current in dependence on a digital data signal. The modulated current forms a laser current that drives the semiconductor laser. An optimal signal shape of the modulated current is guaranteed to the greatest possible extent, even in the case of high modulation frequencies above one Gbit/s, by way of a third circuit that is connected in parallel with the semiconductor laser. The third circuit acts as an ohmic resistance with a high impedance for direct current and with a low-impedance for alternating current with the modulation frequency.

REFERENCES:
patent: 4032802 (1977-06-01), Pan et al.
patent: 4799224 (1989-01-01), Bottacchi et al.
patent: 4952820 (1990-08-01), Frisch
patent: 6532245 (2003-03-01), Paschal et al.
patent: 2002/0085599 (2002-07-01), Schrodinger
patent: 100 65 838 (2002-07-01), None
patent: 11 122 189 (1999-04-01), None
patent: 2002 111 118 (2002-04-01), None

Affiliated with

Also associated with

Rating

Electronic driver circuit for directly modulated... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electronic driver circuit for directly modulated..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electronic driver circuit for directly modulated... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3405570