Principle of OpECS current measurement
When a magnetic field exists at the sensor, the polarization plane of light changes direction
under the influence of the magnetic field.
The angle of rotation of the polarization plane is proportional to the magnitude of the magnetic field (Figure 1).
This information is sent to a control unit at a later stage, where it is converted from an optical signal to an electrical signal.
The converted electrical signals can be input to an oscilloscope or other device to measure the current (Figure 2).
