High-frequency superposing module for driving laser diode

Details High-frequency superposing module for driving laser diode High-frequency superposing module for driving laser diode

2006-04-18

2006-04-18

Vannucci, James (Department: 2828)

Coherent light generators

Particular component circuitry

For driving or controlling laser

C369S116000

Reexamination Certificate

active

07031359

ABSTRACT:
A high-frequency superposing module for driving a laser diode includes an oscillating circuit and an impedance matching circuit. The impedance matching circuit includes a capacitor connected in series between the emitter of a transistor and the terminal through which a laser-diode drive signal is output; and a capacitor connected in parallel between the drive-signal output terminal and the ground. The oscillating circuit includes an inductor serving as a choke coil connected between the drive-signal output terminal and the collector of the transistor, thus allowing the drive-signal output terminal to serve as a power input terminal for the oscillating circuit.

REFERENCES:
patent: 6385219 (2002-05-01), Sonoda
patent: 6914872 (2005-07-01), Tanaka
patent: 10-256630 (1998-09-01), None
patent: 2002-251763 (2002-09-01), None
patent: WO98/01856 (1998-01-01), None

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