Topology on VCSEL driver

Details Topology on VCSEL driver Topology on VCSEL driver

2005-12-27

2005-12-27

Harvey, Minsun Oh (Department: 2828)

Coherent light generators

Particular component circuitry

For driving or controlling laser

C372S038100, C372S038030, C372S038070

Reexamination Certificate

active

06980575

ABSTRACT:
The present invention provides a circuit capable of driving a diode with multiple amounts of current with a low supply voltage without the requirement of alternating current coupling. The circuit provides for headroom voltage for the current sources allowing them to operate correctly without the requirement of external components such as inductors to provide coupling. The circuit may provide one of at least two different amounts of current depending upon the voltage of at least two inputs suitable for driving a vertical cavity surface emitting laser diode.

REFERENCES:
patent: 4709370 (1987-11-01), Bednarz et al.
patent: 5132553 (1992-07-01), Siegel
patent: 5802089 (1998-09-01), Link
patent: 5883910 (1999-03-01), Link
patent: 6236671 (2001-05-01), Babic
patent: 6272160 (2001-08-01), Stronczer
patent: 6618406 (2003-09-01), Kaminishi
patent: 2002/0110167 (2002-08-01), Patterson, III
MAXIM; http://dbserv.maxim-ic.com/quick—view2.cfm?pdf—num=1072; Jan. 24, 2001.

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