Automated system and method for optical measurement and testing
View Patent ↗A system and method for bit error rate testing optical components comprises providing an optical testing unit, which measures a bit error rate of an optical device under test (DUT) over an operating range of the DUT. The optical testing unit includes an optical transmitter, which transmits an optical test signal that is transmitted to the DUT; an optical receiver, which receives an input signal from the DUT; a graphical user interface, which provides an interface with a user; and a controller, selectively coupled to the transmitter, the receiver and the graphical user interface, wherein the controller provides a central control of the transmitter, the receiver and the graphical user interface.
1. A method for measuring bit error rate of an optical component comprising the steps of:
measuring a power level of an optical output signal of an optical transmitter;
if said power level is not a first predetermined power level, adjusting said optical output signal until said power level is said first predetermined power level;
transmitting said optical output signal at said first predetermined power level to an optical device under test (DUT);
receiving an optical input signal from said DUT;
counting a number of bit errors received in said optical input signal; and
changing said first predetermined power level to a second predetermined power level and repeating at least said measuring step, said adjusting step, said transmitting step, said receiving step and said counting step.
2. A method as in claim 1 , wherein said adjusting step comprises attenuating said optical output signal.
3. A method as in claim 1 , wherein said adjusting step comprises adjusting said optical transmitter.
4. A method as in claim 1 , wherein said method is automated.