Chinese Optics Letters, Volume. 20, Issue 4, 040601(2022)
Ultra-small interferometric fiber optic gyroscope with an integrated optical chip
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Fig. 2. “Three-in-one” integrated optical chip (a) schematic and (b) photograph.
Fig. 4. Miniaturized signal detection circuit (a) schematic and (b) photograph.
Fig. 5. Miniaturized drive control circuit (a) flowchart and (b) photograph.
Fig. 6. (a) Prototype, (b) test results, and (c) Allan variance analyses of the integrated IFOG.
Table 1. Key Index of the IOC
View tableView in ArticleTable 1. Key Index of the IOC
Function Performance Required Value SLD Output optical power Central wavelength Spectral width Power stability a Wavelength shift PD Responsibility 3 dB bandwidth Noise voltage Dark current Coupler Splitting ratio <(50 ± 2):(50 ± 2) Insertion loss
Table 2. Comparison between the Integrated IFOG and Traditional IFOG
View tableView in ArticleTable 2. Comparison between the Integrated IFOG and Traditional IFOG
Gyro Type Accuracy (deg/h) Size (mm) Integrated IFOG (closed loop) Better than 0.1 Russian VG191 (open loop) Better than 1 USA DSP1750 (open loop) Better than 0.1
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Kejun Shang, Ming Lei, Haowei Li, Tianqi Zhang, Xiaozhi Yu, Qiang Xiang, Yonglin Na, Lizhe Zhang, "Ultra-small interferometric fiber optic gyroscope with an integrated optical chip," Chin. Opt. Lett. 20, 040601 (2022)
Paper Information
Category: Fiber Optics and Optical Communications
Received: Nov. 1, 2021
Accepted: Jan. 14, 2022
Published Online: Feb. 21, 2022
The Author Email: Ming Lei (leiming1998@yeah.net)
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