EDFA automatic calibration and test system based on VC++

In order to reduce the error caused by manual operation in test process,improve testing efficiency and accuracy,a new automatic erbium-doped optical fiber amplifier(EDFA) calibration and test system was developed. The optical switch in the testing system was designed according to the factors affecting the optical performance. The automatic device was controlled through general-purpose interface bus(GPIB) interface. The automatic control and test was realized by VC++, the software was designed in modular pattern with high cohesion and low coupling characteristics. Major sub-modules were encapsulated as a dynamic link library so that the compatibility and expansibility of software was enhanced, and it's also easier to maintain and modify the software. The efficiency was improved by 60% in the experiments. The result indicates that the testing system is full of practical value for its high test efficiency and accuracy.