A method of increasing the sensitivity of the sensor of the electric current on the crystals Bi<sub>12</sub>SiO<sub>20</sub> Bi<sub>12</sub>GeO<sub>20</sub> by optimal choice of optical components
The conversion factor for a given light intensity at the input sensor can be defined by using the Jones matrix. Critical from the viewpoint of ensuring high performance VOGT are settings of the polarizers sensitive element. For high values of conversion factor it is advisable to use polarizers with an extinction coefficient of not less than 10<sup>2</sup>. Currently more and more widely used fiber-optic sensors of electric current on the basis of type crystals Bi12GeO20 and Bi12SiO20 with a sensitive element single-pass type. The sensitivity of such sensors to electrical current is determined by the conversion factor of the sensor cable, which is proportional to the angle of Faraday.