激光器偏振特性对谐振式光纤陀螺性能的影响

Huaifeng Liu; Lishuang Feng; Hongchen Jiao

doi:10.16818/j.issn1001-5868.2019.02.003

激光器偏振特性对谐振式光纤陀螺性能的影响

Translated title of the contribution: Influence of Laser Polarization Characteristic on Performance of Resonator Fiber Optic Gyro

Huaifeng Liu
, Lishuang Feng
, Hongchen Jiao

School of Instrumentation and Optoelectronic Engineering

Beihang University

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

Laser is an important part of the resonator fiber optic gyroscope (RFOG) and its optical noise severely limits the output accuracy of RFOG. In this paper, the mathematical model of the laser polarization characteristic in RFOG was established. Then, the effects of polarization extinction ratio, alignment error and phase difference between two polarization eigenstates on the performance of RFOG were analyzed, and the model was verified by experiments. In addition, a scheme based on the first harmonic demodulated signal of the intensity modulation was proposed to suppress the amplitude fluctuation of the undesired polarization state in the RFOG. Test results indicate that the drift of gyro introduced by the amplitude fluctuation of the undesired polarization state is reduced by more than 12 dB.

Translated title of the contribution	Influence of Laser Polarization Characteristic on Performance of Resonator Fiber Optic Gyro
Original language	Chinese (Traditional)
Pages (from-to)	161-165
Number of pages	5
Journal	Bandaoti Guangdian/Semiconductor Optoelectronics
Volume	40
Issue number	2
DOIs	https://doi.org/10.16818/j.issn1001-5868.2019.02.003
State	Published - 1 Apr 2019

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10.16818/j.issn1001-5868.2019.02.003

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title = "激光器偏振特性对谐振式光纤陀螺性能的影响",

abstract = "Laser is an important part of the resonator fiber optic gyroscope (RFOG) and its optical noise severely limits the output accuracy of RFOG. In this paper, the mathematical model of the laser polarization characteristic in RFOG was established. Then, the effects of polarization extinction ratio, alignment error and phase difference between two polarization eigenstates on the performance of RFOG were analyzed, and the model was verified by experiments. In addition, a scheme based on the first harmonic demodulated signal of the intensity modulation was proposed to suppress the amplitude fluctuation of the undesired polarization state in the RFOG. Test results indicate that the drift of gyro introduced by the amplitude fluctuation of the undesired polarization state is reduced by more than 12 dB.",

keywords = "Acousto-optic modulator, Noise compensation, Polarization characteristic of laser, Resonator fiber optic gyroscope, Scale factor nonlinearity",

author = "Huaifeng Liu and Lishuang Feng and Hongchen Jiao",

year = "2019",

month = apr,

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doi = "10.16818/j.issn1001-5868.2019.02.003",

language = "繁体中文",

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T1 - 激光器偏振特性对谐振式光纤陀螺性能的影响

AU - Liu, Huaifeng

AU - Feng, Lishuang

AU - Jiao, Hongchen

PY - 2019/4/1

Y1 - 2019/4/1

N2 - Laser is an important part of the resonator fiber optic gyroscope (RFOG) and its optical noise severely limits the output accuracy of RFOG. In this paper, the mathematical model of the laser polarization characteristic in RFOG was established. Then, the effects of polarization extinction ratio, alignment error and phase difference between two polarization eigenstates on the performance of RFOG were analyzed, and the model was verified by experiments. In addition, a scheme based on the first harmonic demodulated signal of the intensity modulation was proposed to suppress the amplitude fluctuation of the undesired polarization state in the RFOG. Test results indicate that the drift of gyro introduced by the amplitude fluctuation of the undesired polarization state is reduced by more than 12 dB.

AB - Laser is an important part of the resonator fiber optic gyroscope (RFOG) and its optical noise severely limits the output accuracy of RFOG. In this paper, the mathematical model of the laser polarization characteristic in RFOG was established. Then, the effects of polarization extinction ratio, alignment error and phase difference between two polarization eigenstates on the performance of RFOG were analyzed, and the model was verified by experiments. In addition, a scheme based on the first harmonic demodulated signal of the intensity modulation was proposed to suppress the amplitude fluctuation of the undesired polarization state in the RFOG. Test results indicate that the drift of gyro introduced by the amplitude fluctuation of the undesired polarization state is reduced by more than 12 dB.

KW - Acousto-optic modulator

KW - Noise compensation

KW - Polarization characteristic of laser

KW - Resonator fiber optic gyroscope

KW - Scale factor nonlinearity

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DO - 10.16818/j.issn1001-5868.2019.02.003

M3 - 文章

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JO - Bandaoti Guangdian/Semiconductor Optoelectronics

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ER -

激光器偏振特性对谐振式光纤陀螺性能的影响

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