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08:23
A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings
Published on: September 30, 2019
Fiber gyroscope with a double sensitivity employing a polarization splitter
Kejiang Zhou1, Shuming Pan, Shujun Liu
1Department of Electronic Engineering, Zhejiang University, Hangzhou 310007, China.
Optics Letters
|April 19, 2013
Summary
A novel method enhances interferometric fiber-optic gyroscope (IFOG) sensitivity by enabling light to traverse the sensing coil twice in distinct polarization states. This technique achieves a preliminary bias stability of 0.006°/h.
Area of Science:
- Photonics
- Optical Engineering
- Inertial Navigation
Background:
- Interferometric fiber-optic gyroscopes (IFOGs) are crucial for inertial navigation.
- Enhancing IFOG sensitivity is critical for high-precision applications.
- Existing methods face limitations in sensitivity and stability.
Purpose of the Study:
- To present an effective method for enhancing IFOG sensitivity.
- To improve the bias stability of IFOGs.
- To explore a novel light propagation technique within the sensing coil.
Main Methods:
- Utilizing a fiber polarization splitter/combiner within the IFOG.
- Implementing a dual-pass light propagation scheme along the sensing coil.
- Employing polarization-maintaining fiber for the sensing coil.
Main Results:
- Achieved a preliminary bias stability of 0.006°/h in a prototype gyro.
- Demonstrated enhanced sensitivity through the dual-pass polarization method.
- Validated the effectiveness of the fiber polarization splitter/combiner.
Conclusions:
- The presented method effectively enhances IFOG sensitivity.
- The dual-pass technique offers a promising approach for high-performance gyroscopes.
- The achieved bias stability indicates significant potential for practical applications.
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