Reduction of backreflection noise in resonator micro-optic gyro by integer period sampling

Area of Science:

• Optics
• Photonics
• Inertial Sensing

Background:

• Resonator micro-optic gyros (RMOGs) are susceptible to accuracy degradation.
• Backreflection interference in RMOGs distorts output waveforms, reducing precision.

Purpose of the Study:

• To introduce a novel method for minimizing sampling errors in RMOGs.
• To enhance the accuracy and stability of RMOGs by addressing backreflection issues.

Main Methods:

• Introduction of the integer period sampling (IPS) method.
• Experimental validation of the IPS method in a silica waveguide ring resonator RMOG.

Main Results:

• The IPS method effectively minimizes sampling errors caused by backreflection.
• Satisfying IPS conditions significantly improves bias repeatability and short-term bias stability.
• Achieved a bias stability of 0.41°/s over one hour with a 10s integration time.

Conclusions:

• The IPS method is a groundbreaking technique for enhancing RMOG performance.
• The study demonstrates a practical solution for improving the accuracy of optical gyroscopes.