Laser diode driver with multiple modulation current source

Details Laser diode driver with multiple modulation current source Laser diode driver with multiple modulation current source

2007-10-30

2009-08-04

Rodriguez, Armando (Department: 2828)

Coherent light generators

Particular component circuitry

For driving or controlling laser

C372S026000, C372S029021

Reexamination Certificate

active

07570680

ABSTRACT:
The present invention is to provide an LD-driver that enables to adjust the waveform of the driving current to the LD even the driver is constituted with a current controlled device such as bipolar transistor. The LD-driver of the invention provides a plurality of modulation current sources each having a function to set the amplitude, the phase and the pulse width of the current output independently. The LD is provided with the modulation current superposed with each current derived from respective current sources.

REFERENCES:
patent: 6683836 (2004-01-01), Miyagawa et al.
patent: 60-187075 (1985-09-01), None

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