Driving laser diodes with immunity to temperature changes, aging, and other effects

Driving laser diodes with immunity to temperature changes, aging, and other effects

Various systems and methods are provided to achieve laser power control. In one embodiment, a system is provided that comprises a counter that holds a digital value. An digital-to-analog converter is employed to convert the digital value to an analog current (IBias/IMod)- A data threshold current is...

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Hauptverfasser: BAZZANI CRISTIANO, NERON CHRISTOPHE, SHIVARAM RAMAKRISHNA, SOLTESZ DARIO
Format: Patent
Sprache:chi ; eng
Schlagworte:
BASIC ELECTRIC ELEMENTS
DEVICES USING STIMULATED EMISSION
ELECTRICITY
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creator BAZZANI CRISTIANO
NERON CHRISTOPHE
SHIVARAM RAMAKRISHNA
SOLTESZ DARIO
description Various systems and methods are provided to achieve laser power control. In one embodiment, a system is provided that comprises a counter that holds a digital value. An digital-to-analog converter is employed to convert the digital value to an analog current (IBias/IMod)- A data threshold current is generated by a laser driver (100a/100b) based upon the analog current (IBias/IMod) - The data threshold current is employed to represent a data value in a data signal employed to drive a laser diode (103). Also, circuitry is employed to adjust the digital value based upon a comparison between a target threshold current and a feedback current (FB) generated from a laser output (109) of the laser diode (103).
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subjects BASIC ELECTRIC ELEMENTS
DEVICES USING STIMULATED EMISSION
ELECTRICITY
title Driving laser diodes with immunity to temperature changes, aging, and other effects
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