Correlation type optical fiber element testing tool

The invention relates to the technical field of optical fiber element detection, in particular to a correlation type optical fiber element testing tool which comprises a base, a first fixing frame, a light filter plate, a first driving assembly, an optical fiber element, a second driving assembly and a third driving assembly. The first fixing frame is arranged on the base; the light filter plate is arranged on the first fixing frame, and the light filter plate is rotationally connected with the first fixing frame through a first detachable assembly; the first driving assembly is arranged on the first detachable assembly, a detection groove allowing the light filter plate to be embedded is formed in the side, close to the light filter plate, of the optical fiber element, a transmitting end and a receiving end are arranged in the detection groove, and the transmitting end and the receiving end are installed in a mutual alignment and correlation mode; the second driving assembly is arranged on the base, and the