Abstract:

The azimuth angle and elliptic of the pulsed magnetic field sensor output light based-on Faraday effect were derived with the Jones matrix. The evolution of output light state of polarization (SOP) was described on the Poincaré Sphere method. It does illustrate what is really happening in the sensor. The output SOP effects of the linear birefringent in Faraday materials and azimuth of the polarizer were simulated, respectively. At same time, a new method of four light path measurement was proposed to eliminate disturbing linear birefringent effects on the pulsed magnetic field sensor and magnetic field output of sensor applying four light path measurement was also calculated.

Key words: pulsed magnetic field sensor, Poincaré, sphere method； linear birefringent