METHOD, APPARATUS AND AUTOMATED SYSTEM FOR CONTROLLING ELECTRICAL PARAMETERS OF LASER DIODE DRIVERS Russian patent published in 2011 - IPC G05B23/00 G01R31/00 

FIELD: physics.

SUBSTANCE: method of controlling electrical parameters of laser diode drivers involves switching a laser diode driver (LDD), which is connected to its in-built system of controlling its electrical parameters, into measurement mode by applying typical values of voltage, current and average optical power to corresponding contacts of the LDD; further, if there is mismatch between the steady-state values at the LDD contacts, a message of unsuitability of the LDD is generated for control parameters, otherwise oscillographs are recorded from input and output contacts of the LDD, from which high and low levels of the input and output voltage, the lag time of the output signal relative the input signal and phase chatter of the output signal are calculated, current consumed by the LDD is measured, voltage across the contact for controlling feedback photoelectric current is measured, while storing all measured and calculated parameters, comparing them with corresponding allowable values of control parameters of the LDD, and a report on the conducted control with a conclusion on suitability of the LDD is created based on the comparison results and the stored parameters. The apparatus for controlling electrical parameters of laser diode drivers, control and monitoring contacts which are connected through functional parts of an electrical schematic diagram to contacts for connection with the LDD, has an adapter board with functional parts meant for controlling different types of LDD, and a connecting board with at least one functional part which is different from the different LDD. The automated system for controlling electrical parameters of laser diode drivers with possibility of supplying the required power to all its components in need of power, has a control device (CD), a matching system (MS), an instrument system (IS) with a controlled power supply, and a monitoring device (MD).

EFFECT: providing all-round tests in all possible operating modes of laser diode drivers of any type by creating and using unified apparatus.

5 cl, 3 dwg