Analysis of Resonance Asymmetry Phenomenon in Resonant Fiber Optic Gyro

Li, Zhuoyan; He, Nie; Sun, Xuqiang; Jin, Chi; Li, Chengxiang; Wu, Xu

doi:10.3390/s18030696

Cited by 10 publications

(8 citation statements)

References 15 publications

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“…The optical power coupling ratio between the coupler direct port and cross port is k :(1 − k ). The remaining percentage of optical power that is caused by insertion loss of the coupler is ρ c [ 3 ].…”

Section: Theoretical Analysis and Simulation Resultsmentioning

confidence: 99%

“…At this moment, the output optical signal of the CCW light wave can reflect the resonant frequency difference of the CW and CCW light waves. Furthermore, the rotational angular speed can be obtained after being processed by the circuit [ 3 ].…”

Section: System Structure Of the Rfogmentioning

confidence: 99%

“…A resonant fiber optic gyro (RFOG) based on the Sagnac effect exhibits the advantages of high sensitivity and large dynamic range [ 2 ]. When compared with the traditional interferometric fiber optic gyro (IFOG), an RFOG is observed to achieve a similar detection precision but with a much shorter fiber length, providing superiority with respect to its further integration and augmenting its application value in the fields of navigation, aerospace, defense, and guidance systems [ 1 , 2 , 3 , 4 , 5 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Temperature Stability of a Hybrid Polarization-Maintaining Photonic Crystal Fiber Resonator and Its Application in a Resonant Fiber Optic Gyro

Zhang

et al. 2018

Sensors

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A fiber ring resonator (FRR) constructed using a Panda polarization-maintaining fiber does not effectively solve the problem of temperature-related polarization fluctuation, which considerably limits the detection accuracy of the resonant fiber optic gyro. The polarization-maintaining photonic crystal fiber (PM-PCF) can improve the thermal stability of the FRR. In this study, a structure that can simultaneously detect the polarization fluctuation of two FRRs is designed. We analyzed and verified the polarization phase shift errors of these two types of fibers, which are caused by the thermally induced birefringence changes. Theoretical simulation and experimental results confirm that a PM-PCF can be used to optimize the FRR, which can effectively suppress the polarization fluctuation.

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Section: Theoretical Analysis and Simulation Resultsmentioning

confidence: 99%

Section: System Structure Of the Rfogmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Temperature Stability of a Hybrid Polarization-Maintaining Photonic Crystal Fiber Resonator and Its Application in a Resonant Fiber Optic Gyro

Zhang

et al. 2018

Sensors

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“…Fiber optic gyro (FOG) is a core component of the third generation inertial measurement devices. It is widely used in military and civilian applications for its advantages of all solid state, high sensitivity, low cost and large dynamic range [1], [2], [3], [4], [5], [6], [7]. The principle of the interferometric fiber optic gyroscope (IFOG) is based on the phase change caused by the Sagnac effect.…”

Section: Introductionmentioning

confidence: 99%

Research on Three-Dimensional Magnetic Induced Error Model of Interferometric Fiber Optic Gyro

Wang

Gao

et al. 2020

IEEE Photonics J.

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In practical, the Faraday effect-induced bias error is one of the main sources of bias error for the interferometric fiber optic gyroscope (IFOG). The Faraday effect-induced bias error impairs in the performance of IFOG. Normally, the Faraday effect-induced bias errors is hardly eliminated. To improve the performance of IFOG, the accurate model of Faraday effect-induced bias errors is necessary for its practical applications. In this paper, from the perspective of the finite element method, we calculate Faraday effect-induced bias errors of the fiber coil by the three-dimensional model in the radial magnetic field and the axial magnetic field. Comparing with the traditional model, the differences mainly come from the size and direction of the magnetic field, including the differences of the twist ratio and the bending rate of each layer. Using the Jones matrix, we derive the three-dimensional magnetic field error model, further more theoretical results are obtained by simulation. The experiment with a 1024 m PM fiber coil are performed, and the experimental results support these theoretical predictions.

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“…Optical gyros based on the Sagnac effect are attractive sensors for inertial navigation systems [1,2,3,4]. However, both the Fiber Optic Gyroscope (FOG) and Ring Laser Gyroscope (RLG) have some serious disadvantages, as they are bulky, expensive, and energy intensive [5,6,7,8]. In order to overcome these shortcomings in traditional optical gyroscopes, the Micro Optic Gyroscope (MOG), which includes the Resonant Integrated Optic Gyroscope (RIOG) and the Interferometric Integrated Optical Gyroscope (IIOG), based on a waveguide ring resonator (WRR) was proposed [9,10,11,12,13,14,15,16].…”

Section: Introductionmentioning

confidence: 99%

Asymmetry Analysis of the Resonance Curve in Resonant Integrated Optical Gyroscopes

Yan

et al. 2019

Sensors

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The Resonant Integrated Optic Gyroscope (RIOG) is a type of high accuracy gyroscope based on the Sagnac effect. A symmetrical resonance curve is very important to the performance of the RIOG. To further investigate and design a RIOG with a waveguide ring resonator, an in-depth research of the asymmetric resonance curve and its influence on the RIOG is fully developed. Four possible optical noises inducing the resonance curve asymmetry are analyzed and their mathematic models are established. These four optical noises are the normal mode effect, the backscattering noise, the backreflection noise and the polarization noise. Any asymmetry of the resonance curve will not only induce a large output bias error into the gyro output, but also seriously decrease the frequency discrimination parameter of the demodulation curve. By using a tunable fiber laser, the high aspect ratio silicon nitride WRR and the silicon dioxide WRR were tested. The experiment measured resonance curves can be well fitted with the theoretical simulation results. The experimental results show that a high aspect ratio silicon nitride waveguide can effectively suppress the polarization noise in the RIOG.

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Analysis of Resonance Asymmetry Phenomenon in Resonant Fiber Optic Gyro

Cited by 10 publications

References 15 publications

Temperature Stability of a Hybrid Polarization-Maintaining Photonic Crystal Fiber Resonator and Its Application in a Resonant Fiber Optic Gyro

Temperature Stability of a Hybrid Polarization-Maintaining Photonic Crystal Fiber Resonator and Its Application in a Resonant Fiber Optic Gyro

Research on Three-Dimensional Magnetic Induced Error Model of Interferometric Fiber Optic Gyro

Asymmetry Analysis of the Resonance Curve in Resonant Integrated Optical Gyroscopes

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