Reduction of Kerr effect induced bias in Brillouin fiber optic gyroscope

TLDR: In this article, a new model of Brillouin fiber optic gyroscope output based on square wave frequency modulation is established to solve the problem that the output signal of the BrillouIN fiber optic Gyroscope is significantly influenced by the Kerr effect.

Abstract: A new model of Brillouin fiber optic gyroscope output based on square wave frequency modulation is established to solve the problem that the output signal of Brillouin fiber optic gyroscope is significantly influenced by Kerr effectThe results show that the Kerr effect induced bias is related not only to the intensity difference between two inverse lights,but also to the amplitudes of square wave frequency modulationThe Kerr effect induced bias can be effectively reduced through properly adjusting the frequency modulation amplitudeThis method does not need additional optical devices and has low requirement for intensity modulation frequencyIt is an effective method for reducing Kerr effect induced bias in Brillouin fiber optic gyroscope