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Resonant fiber optical gyroscope using the single-mode fiber ring resonator
Applied Optics
|October 6, 2021
Summary
This study presents a new method for creating accurate, affordable resonant fiber optical gyroscopes (RFOGs) using single-mode fibers. This approach significantly reduces noise and improves performance, making it ideal for practical applications.
Area of Science:
- Photonics and Optical Engineering
- Inertial Navigation Systems
Background:
- Resonant Fiber Optical Gyroscopes (RFOGs) are crucial for navigation but are often limited by bias instability.
- Temperature-related polarization noise is a major factor degrading RFOG performance.
Purpose of the Study:
- To develop a high-accuracy, low-cost RFOG scheme.
- To suppress polarization noise and enhance sensitivity using single-mode (SM) fibers.
Main Methods:
- Fabrication of a transmissive 39-m-long SM fiber ring resonator (FRR).
- Utilizing the SM-FRR as the sensing element in an RFOG setup.
- Characterization of the FRR's finesse and total loss.
Main Results:
- Suppression of temperature-related polarization noise due to the longer birefringence beat length of SM fibers.
- Achieved an angular random walk of 0.0039°/√h.
- Demonstrated a bias stability of 0.05°/h.
Conclusions:
- The SM-FRR scheme offers a promising solution for high-accuracy, low-cost RFOGs.
- SM fibers enhance theoretical sensitivity due to low component loss.
- This method effectively mitigates polarization noise, improving bias stability.
