Chinese Optics Letters, Vol. 18, Issue 12, 120601 (2020)
Near-navigation-grade interferometric fiber optic gyroscope with an integrated optical chip
Kejun Shang1,2, Ming Lei2,*, Qiang Xiang2, Yonglin Na2, Lizhe Zhang2, and Huaiyong Yu2
- 1School of Automation, Beijing Institute of Technology, Beijing 100081, China
- 2State Key Laboratory of Inertial Technology, Beijing Institute of Automatic Control Equipment, Beijing 100074, China
We present a near-navigation-grade interferometric fiber optic gyroscope (IFOG) based on an integrated optical chip. The chip comprises a light source, a photodiode, and a 3 dB coupler within an area of 48 mm2. By interrogating with an integrated optical modulator and a small-diameter sensing coil, the IFOG is realized. This allows for a significant reduction in size, weight, power consumption, and cost. Preliminary performance data of a gyro prototype exhibits 0.018 deg/h bias instability.
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