Near-navigation-grade interferometric fiber optic gyroscope with an integrated optical chip

Shang, Kejun; Lei, Ming; Xiang, Qiang; Na, Yonglin; Zhang, Lizhe; Yu, Haiming

doi:10.3788/col202018.120601

Cited by 15 publications

(9 citation statements)

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“…However, the size of photonics devices fabricated on bulk materials is often large, and it is difficult to improve device integration. Therefore, single crystal LN thin with SOI like structure are urgently needed [7][8][9][10] .…”

Section: Introductionmentioning

confidence: 99%

Integrated fiber optic gyroscope based on silicon lithium niobate thin waveguide

Zuo¹,

Yang²,

Zhao³

et al. 2023

Ninth Symposium on Novel Photoelectronic Detection Technology and Applications

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Section: Introductionmentioning

confidence: 99%

Integrated fiber optic gyroscope based on silicon lithium niobate thin waveguide

Zuo¹,

Yang²,

Zhao³

et al. 2023

Ninth Symposium on Novel Photoelectronic Detection Technology and Applications

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“…By building a system with discrete components, one can freely choose the device with the best performance, but it inevitably introduces factors such as end reflection, coupling loss, and polarization noise, which can reduce device performance. At the same time, due to the large size and independent packaging of optical devices, as well as the hundreds to thousands of fiber coil, traditional solutions for fiber optic gyroscopes face numerous difficulties in achieving miniaturization [4].…”

Section: Introductionmentioning

confidence: 99%

A fiber optic gyroscope based on integrated optoelectronic devices

Zhao,

Tang,

Zhang

et al. 2023

AOPC 2023: Optic Fiber Gyro

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In recent years, the large volume, high cost, and high power consumption of fiber optic gyroscopes composed of various discrete devices have limited their application in various micro inertial navigation systems. This paper proposes a fiber optic gyroscope based on integrated optoelectronic devices. Compared with fiber optic gyroscopes based on discrete components, fiber optic gyroscopes based on integrated optoelectronic devices significantly reduce their volume despite limited accuracy degradation, and are expected to be applied in integrated fiber optic gyroscopes.

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“…After decades of development, the technology of IFOG has become very mature, and it is widely used in aviation, navigation, satellite navigation, and other fields [ 1 , 2 ]. In recent years, miniaturization and lowering costs have become hot topics of IFOG [ 3 , 4 , 5 , 6 , 7 ]. With the development of integrated chip technology, optical components of IFOG have gradually begun to be integrated into the chip, making miniaturization and low cost for IFOG possible.…”

Section: Introductionmentioning

confidence: 99%

“…This is one of the reasons why there are almost no successful cases of miniaturized light sources for an IFOG, although Shang et al realized the integration of a light source, photodetector and coupler in 2020. With the limitation of the volume of the TEC, the size after packaging still exceeded 26 mm [ 3 ]. In addition, a light source, three photodetectors, two phase modulators, and two couplers were integrated into single chip by Tran et al in 2017, but the performance of these fiber-optic gyroscopes is relatively low, at just about 0.53 °/h [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

A Novel Closed-Loop Control to Solve Light Source Power Fluctuations in the Fiber-Optic Gyroscope

Zheng

Ren

Luo

et al. 2023

Sensors

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The performance of a gyroscope is directly affected by the fluctuations in the light source power (LSP) in an interferometric fiber-optic gyroscope (IFOG). Therefore, it is important to compensate for fluctuations in the LSP. When the feedback phase generated by the step wave completely cancels the Sagnac phase in real-time, the error signal of the gyroscope is linearly related to the differential signal of the LSP, otherwise, the error signal of the gyroscope is uncertain. Herein, we present two compensation methods to compensate for the error of the gyroscope when the error is uncertain, which are double period modulation (DPM) and triple period modulation (TPM). Compared with the TPM, DPM has better performance, but it increases the requirements for the circuit. TPM has lower requirements for the circuit and is more suitable for small fiber- coil applications. The experimental results show that, when the frequency of the LSP fluctuation is relatively low (1 kHz and 2 kHz), DPM and TPM do not differ significantly in terms of performance; both of them can achieve an improvement of about 95% in bias stability. When the frequency of the LSP fluctuation is relatively high (4 kHz, 8 kHz and 16 kHz), DPM and TPM can achieve about 95% and 88% improvement in bias stability, respectively.

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Near-navigation-grade interferometric fiber optic gyroscope with an integrated optical chip

Cited by 15 publications

References 0 publications

Integrated fiber optic gyroscope based on silicon lithium niobate thin waveguide

Integrated fiber optic gyroscope based on silicon lithium niobate thin waveguide

A fiber optic gyroscope based on integrated optoelectronic devices

A Novel Closed-Loop Control to Solve Light Source Power Fluctuations in the Fiber-Optic Gyroscope

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