Patent ID: 7869052

Claim:
A device for suppressing 2 nd order harmonic distortion in a Resonator Fiber Optic Gyroscope, the device comprising: a laser driver for driving at least one of a plurality of counter propagating laser beams traveling through a fiber optic resonator, the driving occurring in accord with a modulated signal; a modulation generator to produce the modulation signal; and a modulation amplitude adjuster for amplifying the modulation signal such that the final amplitude is a 1 = k 2 2 ⁢ k 4 where the fiber optic resonator outputs a signal according to y| ω =−k 2 a 1 a 2 sin(ω t )+2 k 4 a 1 3 a 2 sin(ω t ) the modulation amplitude adjuster being interposed in a signal path between the laser driver and the modulation generator.