Mr. Xiaole Wu Profile

With the rapid development of the fiber optical gyroscope technology and its widely applies, the multi-axis Fiber Optical Gyroscope (FOG) such as the triaxial FOG and its system are popular more and more.[1-2] For the requirement of less weight and less size,[2] the multi-axis FOG needs higher electromagnetic structure design skills and more critical devices compared with uniaxial FOG. The Z axis of some triaxial FOGs occur the problem of the bias instability over tolerance, which is a real engineering case in our development process. In this paper experiments are carried out after the influence factors are analyzed. Results show that the modulation of the Z axis is interfered by the other two axes. There are three test steps in the experiment including the optical unit test, the modulator test and the modulator shield test with different materials. A simulation of the original shield structure is applied in order to find the structure defects. Two defects are found on the base of the analysis of the electromagnetic structure check. The main defect is that there is a hollow structure on the top of the Z axis in the system which causes extra electromagnetic circuit from the other two axes. The other defect is that each axis is exposed under complex circumstance with less modulator shield. The modulator with less shield has the merit of less thermal stress owing to the free contraction between the metal packaging and the modulator. In our triaxial FOG system, the modulator shield structure inherits from the uniaxial FOG with less shield, in order to decrease the thermal stress. As we know, in the uniaxal FOG the modulator will still robustly work under a clean electromagnetic circumstance, even there is no shield upon the modulator. However, in the multi-axis FOG there are obvious crosstalk interference between the different axes, when all axes are working together with a close frequency. Based on the experiments and the analysis, the following design principles are given. Firstly, the thermal factors, the vibration factors and the electromagnetic factors should be considered at the same time when the modulator shield is designed. Secondly, the Fe-Ni material has better shield effect than the common metal like Aluminum. Thirdly, there are two kinds of resins, the hard buffer and soft buffer, to connect the Y-junction fiber tail and the metal capsulation. This paper is of great use to the engineering of the multi-axis fiber optical gyroscopes and the fiber optical gyroscope system applications.

Proceedings Article | 5 November 2020 Paper

Study on influence of polymer functional resin for optical fiber sensing on FOG

Xiaole Wu, Chao Song, Xiaoming Zhao, Yinggui Shi, Bohan Liu, Yong Chen

Proceedings Volume 11569, 115690S (2020) https://doi.org/10.1117/12.2580312

KEYWORDS: Fiber optic gyroscopes, Sensors, Optical fibers, Polymers, Gyroscopes, Optical sensing

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Proceedings Article | 18 December 2019 Paper

Study on synthesis of UV potting adhesive and the temperature characteristics of optical fiber coil

Xiaole Wu, Bohan Liu, Ruoxiang Tang, Yueze Wang

Proceedings Volume 11340, 113401B (2019) https://doi.org/10.1117/12.2547778

KEYWORDS: Adhesives, Ultraviolet radiation, Fiber optics sensors, Optical fibers, Fiber optic gyroscopes, Polyurethane, Infrared spectroscopy

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Proceedings Article | 18 December 2019 Paper

FOG fiber coil reliability assessment based on Bayesian estimation method

Yueze Wang, Hongyu Yu, Xiaole Wu, Bohan Liu

Proceedings Volume 11340, 113400D (2019) https://doi.org/10.1117/12.2541949

KEYWORDS: Reliability, Fiber optic gyroscopes, Optical fibers, Failure analysis, Gyroscopes, Sensors, Beam splitters, Fiber optics sensors

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Proceedings Article | 18 December 2019 Paper

Reliability evaluation of high precision fiber optic gyroscope based on temperature and humidity dual stress Peck model

Yueze Wang, Hongyu Yu, Xiaole Wu, Bohan Liu

Proceedings Volume 11340, 113400H (2019) https://doi.org/10.1117/12.2542249

KEYWORDS: Fiber optic gyroscopes, Motion models, Humidity, Reliability, Performance modeling

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Proceedings Article | 18 December 2019 Paper

A testing system of analyzing reliability induced by the FOG coil

Bo-han Liu, Wen-long Zuo, Xiao-le Wu, Yue-ze Wang

Proceedings Volume 11340, 1134005 (2019) https://doi.org/10.1117/12.2538967

KEYWORDS: Fiber optic gyroscopes, Reliability, Analytical research, Navigation systems, Adhesives, Chemical oxygen iodine lasers, Failure analysis, Electro optics

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Proceedings Article | 12 December 2018 Paper

Design and fabrication of high precision optical fiber coil based on temperature error model

Yueze Wang, Xiaole Wu, Bohan Liu, Jun Ma

Proceedings Volume 10847, 108470H (2018) https://doi.org/10.1117/12.2504973

KEYWORDS: Optical fibers, Fiber optic gyroscopes, Error analysis, Glasses, Performance modeling, Mathematical modeling, Adhesives

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