Estimation of Distributed Polarization Coupling Error in Optical Fiber Coil of Fiber Optic Gyroscope

Fig. 8. Secondary polarization coupling error model of optical fiber coil. (a) Simplified model of optical fiber coil; (b) enlarged drawing of dotted box in Fig. 8(a)

Download full size

Fig. 9. Test and analysis system for optical fiber coil

Download full size

Fig. 10. Estimated and measured results of bias drifts. (a) Fiber coil 1; (b) fiber coil 2

Download full size

Table 1. Data partitioning of PCs

View table

Table 1. Data partitioning of PCs

Serial number	Data type	Basic criterion	Handling method
1	Residual noise	Having peak, width is not larger than 2l_d	Elimination
2	Single PCs	Having peak, width is about 2l_d	Direct extraction
3	Multiple PCs	Multiple peaks, width is lower than 2l_d	Initialing solving equations

Table 2. Estimated and measured bias drifts of optical fiber coil 1
View table
Table 2. Estimated and measured bias drifts of optical fiber coil 1
Temperature /℃ φ_sum /(10^-7 rad) Ω_ED /[10^-3 (°)·h^-1] Ω_MD /[10^-3 (°)·h^-1] Ω_Ori /[(°)·h^-1]
-30 8.38 2.17 2.48 0.0846
-10 7.62 1.97 2.15 0.0631
25 5.06 1.26 1.74 0.0542
40 6.31 1.72 2.08 0.0843
60 8.15 2.13 2.39 0.0746

Table 3. Estimated and measured bias drifts of optical fiber coil 2
View table
Table 3. Estimated and measured bias drifts of optical fiber coil 2
Temperature /℃ φ_sum /(10^-7 rad) Ω_ED /[10^-3 (°)·h^-1] Ω_MD /[10^-3 (°)·h^-1] Ω_Ori /[(°)·h^-1]
-30 7.45 1.93 2.13 0.0849
-10 7.19 1.86 1.99 0.0651
25 5.46 1.36 1.65 0.0544
40 6.57 1.52 1.88 0.0562
60 7.23 1.89 2.06 0.0983

Tools

Get Citation

Copy Citation Text

Xie Ze, Yang Yuanhong, Yan Han, Yang Fuling. Estimation of Distributed Polarization Coupling Error in Optical Fiber Coil of Fiber Optic Gyroscope[J]. Chinese Journal of Lasers, 2017, 44(10): 1006004

Download Citation

EndNote(RIS)BibTex Plain Text

Set citation alerts for article

Save article for my favorites