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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/hr1/2 and BIS to 2.298 deg/hr compared to an ARW of 0.172 deg/hr1/2 and BIS of 5.862 deg/hr...
Continuously tuned VCSEL is employed as optical source for a fiber optic gyroscope (FOG) for the first time. Results show very low drift and are comparable to those obtained by systems employing superluminescent diodes (SLD).
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