Optical switch reversing device for test of multiple light jaws equipment

The invention relates to a light switcher used to test multi-light-port device, wherein it is arranged between one error bit tester and one tested multi-light-port device; it comprises one main controller and a light switch array unit; said main controller comprises a processor, a communication interface, a driving circuit and a programmable logic unit; the main controller is used to communicate between the light switch and the error bit tester, to arranged the light switch of light switch array unit; said light switch array unit has several light switches, whose setting is controlled by the main processor uses driving circuit to set the control pin of each light switch. The invention can be connected to extender, to improve the testing efficiency, with simple operation and low cost.