Tactical-grade interferometric fiber optic gyroscope based on an integrated optical chip

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

doi:10.1016/j.optcom.2020.126729

Cited by 27 publications

(8 citation statements)

References 8 publications

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“…In the future, the Si-based integration process can be developed to reduce the size of the IOC from the cm 2 scale to the mm 2 scale and, accordingly, the overall size and weight of the integrated IFOG. In the process of reducing the IOC size, it is also necessary to solve the problems of electromagnetic crosstalk, temperature imbalance, and anti-symmetrical radiation [18] .…”

Section: Discussionmentioning

confidence: 99%

Ultra-small interferometric fiber optic gyroscope with an integrated optical chip

Shang

Lei

et al. 2022

Chin. Opt. Lett.

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This study proposes a novel interferometric fiber optic gyroscope (IFOG) based on an integrated optical chip, applicationspecific integrated circuit, and small-diameter sensing coil. The overall size and weight of the prototype are 30 mm × 30 mm × 30 mm and 68 g, respectively, making it the smallest closed-loop IFOG, to the best of our knowledge. A static experiment shows that the bias stability of the integrated IFOG is very close to the theoretical accuracy limit determined by the fiber coil and can satisfy the requirements of near-navigation-grade compact inertial navigation systems.

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Section: Discussionmentioning

confidence: 99%

Ultra-small interferometric fiber optic gyroscope with an integrated optical chip

Shang

Lei

et al. 2022

Chin. Opt. Lett.

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“…They have the advantages of simple structure, an absence of dynamic parts, and high accuracy. They are among the most successful fiber-optic sensors on the market and are widely used in various systems for military and civil applications [ 1 , 2 , 3 , 4 , 5 ]. IFOGs are divided into closed-loop and open-loop configurations according to their structures.…”

Section: Introductionmentioning

confidence: 99%

Real-Time Compensation for SLD Light-Power Fluctuation in an Interferometric Fiber-Optic Gyroscope

Zheng

Ren

Luo

et al. 2023

Sensors

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An interferometric fiber-optic gyroscope (IFOG) demodulates a rotation signal via interferometric light intensity. However, the working environments of IFOGs typically involve great uncertainty. Fluctuations in temperature, air pressure, electromagnetic field, and the power system all cause the power of the superluminescent diode (SLD) light source to fluctuate as well. In this invited paper, we studied the effects of SLD power fluctuation on the dynamic and static performance characteristics of a gyro system through the use of a light-power feedback loop. Fluctuations of 0.5 mA, 1 mA, and 5 mA in the SLD source entering the IFOG caused zero-bias stability to be 69, 135, and 679 times worse. We established an effective method to monitor power fluctuations of SLD light sources and to compensate for their effects without increasing hardware complexity or system cost. In brief, we established a real-time power-sensing and -compensating system. Experimental results showed that for every 0.1 mA increase in the fluctuation amplitude of the driving current, the zero-bias stability became 4 to 7 times worse, which could be reduced about 95% through the use of SLD power compensation.

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“…Therefore, in terms of the implementation approach of integrated optical engine chips, achieving the integration of optical devices for FOG through single chip integration on a single material system still faces significant challenges. At present, the mainstream development direction for developing integrated optical engine chips of FOGs is still hybrid integration technology [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

A design of integrated specialized optical device for three-cluster fiber optic gyroscope

Yu,

Zhang,

Zhao

et al. 2023

AOPC 2023: Optic Fiber Gyro

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With the development of micro and small aircraft, unmanned systems, autonomous driving, wearable human navigation technology, missile guidance, and other fields. Accuracy is no longer the only core indicator of inertial navigation systems. Low cost, size, quality, and power (CSWaP) have become the key to enhancing the competitiveness of inertial technology products. Due to the large size and independent packaging of optical components, it is difficult to improve the CSWaP comprehensive performance of fiber optic gyroscopes (FOGs) under traditional solutions. Currently, using integrated optical technology to realize the integration of FOGs is the main way to reduce the comprehensive indicators of CSWaP of FOGs. Integrated FOGs refer to FOGs that use integrated optical chips to partially or completely replace optical devices of traditional FOGs. In this article, we propose a design scheme for a specialized integrated device of three-axis FOGs, which can achieve the integration of the main optical components of the interferometric fiber optic gyroscope optical path. It is of great significance for promoting the development process of miniaturization, lightweight, integration, low power consumption, and low cost of FOGs.

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Tactical-grade interferometric fiber optic gyroscope based on an integrated optical chip

Cited by 27 publications

References 8 publications

Ultra-small interferometric fiber optic gyroscope with an integrated optical chip

Ultra-small interferometric fiber optic gyroscope with an integrated optical chip

Real-Time Compensation for SLD Light-Power Fluctuation in an Interferometric Fiber-Optic Gyroscope

A design of integrated specialized optical device for three-cluster fiber optic gyroscope

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