Sensitivity improvement of fiber-optic gyroscope with erbium-doped fiber source by source excess noise subtraction

Erbium 첨가 광섬유 광원을 사용하는 자이로스코프에서 광원 과잉잡음 소거에 의한 측정감도 개선

In the fiber-optic gyroscope employing the erbium-doped fiber source, the source excess noise was subtracted through a signal processing to improve the gyroscope sensitivity . As the result, we obtained the improvement of 14 dB(electrical) at the proper frequency, which was measured from the noise floor spectrum . In addition the random walk coefficient in the gyro output was reduced by about factor of three.