FARADAY ISOLATOR WITH STABILIZATION OF INSULATION Russian patent published in 2017 - IPC G02F1/09 

FIELD: optics.

SUBSTANCE: invention relates to optical engineering and can be used as element of optical isolation on basis of Faraday effect for lasers, subjected to effect of surrounding medium. Faraday isolator stabilizing degree of isolation has series-arranged on optical axis, polarizer, magnetooptic rotator, installed in magnetic system with help of holder, part of which is made of material, coefficient of thermal expansion of which considerably exceeds thermal expansion coefficients of other materials of insulator, and analyzer. Field created by magnetic system of insulator has such longitudinal inhomogeneity in region of magnetooptical rotator, that at elongation of holder under temperature effect magnetooptical element moves in area of larger magnetic field to compensate reducing angle of plane turn polarization by magnetooptical rotator, caused by decreasing value of its Verdet constant.

EFFECT: technical result lies in stabilization of degree of isolation by Faraday isolator in wide temperature range of ambient medium, while maintaining constant coefficient of passing on live pass.

4 cl, 2 dwg