Influencing Factors of Open-Loop Fiber Optic Gyroscope with Large Dynamic Range Quadrature Demodulation Algorithm

Jia Li; Chen Meng; Ya Su; Shengbao Wu; Peng Hao; X.Steve Yao

doi:10.3788/LOP202259.1706004

Journals >Laser & Optoelectronics Progress >Volume 59 >Issue 17 >Page 1706004 > Article

Laser & Optoelectronics Progress
Vol. 59, Issue 17, 1706004 (2022)

Influencing Factors of Open-Loop Fiber Optic Gyroscope with Large Dynamic Range Quadrature Demodulation Algorithm

Jia Li^1,2, Chen Meng^1,2, Ya Su^1,2, Shengbao Wu^1,2..., Peng Hao^1,2,* and X.Steve Yao^1,2|Show fewer author(s)

Author Affiliations

¹Photonics Information Innovation Center, College of Physics and Technology, Hebei University, Baoding 071002, Hebei , China

²Hebei Provincial Center for Optical Sensing Innovations, Baoding 071002, Hebei , China

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DOI: 10.3788/LOP202259.1706004 Cite this Article Set citation alerts

Jia Li, Chen Meng, Ya Su, Shengbao Wu, Peng Hao, X.Steve Yao. Influencing Factors of Open-Loop Fiber Optic Gyroscope with Large Dynamic Range Quadrature Demodulation Algorithm[J]. Laser & Optoelectronics Progress, 2022, 59(17): 1706004 Copy Citation Text

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Fig. 1. Principle of the open-loop fiber optic gyroscope

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Quadrant osition of Sagnac phase shift φs in the range of 0‒2π

Fig. 2. Quadrant osition of Sagnac phase shift

φ_{s}

in the range of 0‒2π

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Fig. 3. Feedback control flow chart of

f_{m}

and

V_{P P}

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Fig. 4. Relationship between modulation error and demodulation error. (a)

φ_{s} = 0

; (b)

φ_{s} = π / 4

; (c)

φ_{s} = 7 π / 6

; (d)

φ_{s} = 5 π / 3

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Fig. 5. Effect of frequency offset

Δ f_{m}

and voltage peak to peak offset

Δ V_{P P}

on demodulation accuracy. (a)

φ_{s} = 0

; (b)

φ_{s} = π / 4

; (c)

φ_{s} = 7 π / 6

; (d)

φ_{s} = 5 π / 3

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Fig. 6. Effects of sampling phase error on demodulation phase standard deviation

S

Jia Li, Chen Meng, Ya Su, Shengbao Wu, Peng Hao, X.Steve Yao. Influencing Factors of Open-Loop Fiber Optic Gyroscope with Large Dynamic Range Quadrature Demodulation Algorithm[J]. Laser & Optoelectronics Progress, 2022, 59(17): 1706004

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