Acta Photonica Sinica, Volume. 54, Issue 1, 0106001(2025)
FBG Wavelength Demodulation Method Based on Support Vector Regression Optimized by Sparrow Search Algorithm
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Fig. 2. Diagram of FBG wavelength demodulation system based on tunable F-P filters
Fig. 3. Variation of F-P transmission wavelength driven by sawtooth wave with different frequencies
Fig. 5. Variation of F-P transmission wavelength in the range of 5~8 V
Fig. 7. Compensation values and absolute errors for different algorithmic models
Fig. 9. Comparison of results of several different demodulation methods
Table 1. Evaluation metrics for training results of different algorithmic models（frequency is 2.5 Hz）
View tableView in ArticleTable 1. Evaluation metrics for training results of different algorithmic models（frequency is 2.5 Hz）
Model R2 MSE/pm RMSE/pm MAPE SSA-SVR 0.999 995 1.26 35.45 0.002 5% PSO-SVR 0.999 982 4.78 65.72 0.003 5% LSSVR 0.999 988 3.08 55.51 0.002 9% KRR 0.998 086 44.96 211.96 0.010 9%
Table 2. Error analysis of prediction results of four algorithmic models（frequency is 0.5 Hz）
View tableView in ArticleTable 2. Error analysis of prediction results of four algorithmic models（frequency is 0.5 Hz）
Model R2 MSE/pm RMSE/pm MAPE SSA-SVR 0.999 997 1.21 34.77 0.001 6% Train data PSO-SVR 0.999 986 3.22 56.80 0.003 1% LSSVR 0.999 983 4.18 64.67 0.003 5% KRR 0.999 616 99.4 315.28 0.016 4% SSA-SVR 0.999 995 0.77 27.75 0.001 3% Test data PSO-SVR 0.999 987 3.64 60.33 0.003 1% LSSVR 0.999 984 3.99 64.67 0.003 6% KRR 0.999 623 103.6 321.86 0.017 4%
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Yinggang LIU, Fei LI, Yubo YUAN, Rui LI, Rui ZHOU, Xinyi XU. FBG Wavelength Demodulation Method Based on Support Vector Regression Optimized by Sparrow Search Algorithm[J]. Acta Photonica Sinica, 2025, 54(1): 0106001
Paper Information
Category: Fiber Optics and Optical Communications
Received: Jun. 28, 2024
Accepted: Aug. 13, 2024
Published Online: Mar. 5, 2025
The Author Email: LIU Yinggang (ygliu@xsyu.edu.cn)
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