Effect of direct PRBS modulation on laser driven fiber optic gyroscope

We demonstrate that direct frequency modulation with a pseudo random bit sequence (PRBS) improves the angle random walk (ARW) and bias instability (BIS) for a laser-driven fiber optical gyroscope over a continuous wave (CW) laser driven gyroscope. The PRBS modulation is shown to improve the ARW to 0.076 deg/hr
^1/2
and BIS to 2.298 deg/hr compared to an ARW of 0.172 deg/hr
^1/2
and BIS of 5.862 deg/hr for the CW case.