Improving thermal stability of a resonator fiber optic gyro employing a polarizing resonator

Yu, Xuhui; Ma, Huilian; Jin, Zhonghe

doi:10.1364/oe.21.000358

Cited by 40 publications

(12 citation statements)

References 8 publications

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“…To reduce the polarization-fluctuation induced errors, a transmitter OFRR by inserting two in-line polarizers in a polarization-maintaining fiber (PMF) resonator with twin 90° polarization-axis rotated splices is adopted [11,12]. In the lock-in state, the central frequency of the laser tracks the resonant frequency of the CCW lightwave in the OFRR.…”

Section: Principles and Experimentsmentioning

confidence: 99%

Reduction of the effect of the overflow reset in resonant frequency servo loop for resonator fiber optic gyro

et al. 2013

Fourth Asia Pacific Optical Sensors Conference

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Digital proportional-integral (PI) controller is always adopted in the resonant frequency servo loop in a highperformance resonator fiber optic gyro (R-FOG). Large reset pulse at the output of the R-FOG occurs on the overflow reset of the digital PI controller, which limits the lock-in frequency accuracy and system response. To reduce the effect of the overflow reset in the digital PI, an auto-controlled reset technique is proposed and experimentally demonstrated. As a result, the time back to the lock-in state falls from 8 s to 5 ms. With the integration time of 1 s, the equivalent accuracy of the resonant frequency servo loop is improved to 0.18 deg/h.

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Section: Principles and Experimentsmentioning

confidence: 99%

Reduction of the effect of the overflow reset in resonant frequency servo loop for resonator fiber optic gyro

et al. 2013

Fourth Asia Pacific Optical Sensors Conference

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“…On the other hand, the north-finding algorithm affects the FOG north-finding precision and rapidity obviously, so the north-finding algorithm can be considered to be improved in order to better meet the practical requirements for the gyroscope north-finding system. Among the FOG north-finding algorithm, static north-finding is a traditional method and has been widely used, but the operation is complex, and north-finding precision is limited [7,8]. The FOG dynamic north-finding plan is a new inertial positioning method, which is being explored and taken much of the focus of researchers at home and abroad.…”

Section: Introductionmentioning

confidence: 99%

Fiber optic gyroscope dynamic north-finder algorithm modeling and analysis based on Simulink

Zhang

Liu

2017

Photonic Sens

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Abstract:In view of the problems such as the lower automation level and the insufficient precision of the traditional fiber optic gyroscope (FOG) static north-finder, this paper focuses on the in-depth analysis of the FOG dynamic north-finder principle and algorithm. The simulation model of the FOG dynamic north found algorithm with the least square method by points is established using Simulink toolbox, and then the platform rotation speed and sampling frequency, which affect FOG dynamic north found precision obviously, are simulated and calculated, and the optimization analysis is carried out as a key consideration. The simulation results show that, when the platform rotation speed is between 4.5 °/s and 8.5 °/s and the sampling frequency is at about 50 Hz in the case of using the parameters of this paper, the FOG dynamic north finding system can reach the higher precision. And the conclusions can provide the reference and validation for the engineering and practical of FOG dynamic north-finder.

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“…Two key nonreciprocal noises, the optical Kerr-induced drift [6,7] and temperature-driven polarization instability [8,9] have been regarded as the main barriers for the improvement of the performance of the RFOG. The optical Kerr effect is a nonlinear and power-dependent process in the sensing fiber of the RFOG.…”

Section: Introductionmentioning

confidence: 99%

Hybrid air-core photonic bandgap fiber ring resonator and implications for resonant fiber optic gyro

Yan

Wang

et al. 2015

SPIE Proceedings

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A novel hybrid polarization-maintaining (PM) air-core photonic bandgap fiber (PBF) ring resonator is demonstrated by using a conventional PM fiber coupler formed by splicing a section of air-core PBF into the resonator. The coupling loss between the PM air-core PBF and the conventional solid-core PM fiber is reduced down to ∼1.8 dB per junction. With the countermeasures proposed to reduce the backscattering induced noise, a bias stability of approximately 0.007 °/s was observed over a 1 hour timeframe, which is the best result reported to date, to the best of our knowledge, for RFOGs equipped with a hybrid air-core PBF ring resonator.

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Improving thermal stability of a resonator fiber optic gyro employing a polarizing resonator

Cited by 40 publications

References 8 publications

Reduction of the effect of the overflow reset in resonant frequency servo loop for resonator fiber optic gyro

Reduction of the effect of the overflow reset in resonant frequency servo loop for resonator fiber optic gyro

Fiber optic gyroscope dynamic north-finder algorithm modeling and analysis based on Simulink

Hybrid air-core photonic bandgap fiber ring resonator and implications for resonant fiber optic gyro

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