Multi-Objective Optimal Configuration of Bandwidth Resources in FBG Sensor Network for Asymmetric Overlapping Spectra

Hao Jiang; Chaohui Lin; Jing Chen; Xiren Miao

doi:10.3788/AOS202141.1006002

Acta Optica Sinica, Volume. 41, Issue 10, 1006002(2021)

Multi-Objective Optimal Configuration of Bandwidth Resources in FBG Sensor Network for Asymmetric Overlapping Spectra

Hao Jiang^1,2, Chaohui Lin^1,2, Jing Chen^1,2、*, and Xiren Miao^1,2

Author Affiliations

¹College of Electrical Engineering and Automation, Fuzhou University, Fuzhou, Fujian 350108, China

²Research Institute of Power System & Power Equipment, Fuzhou University, Fuzhou, Fujian 350108, China;

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Figures & Tables(11)

Fig. 1. Structure of FBG sensor network

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Fig. 2. Spectral shape of FBG reflection spectrum. (a) Symmetric; (b) asymmetric

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Fig. 3. Distribution of the central wavelength of the asymmetric 3-FBGs sensor network

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Fig. 4. NSGA-II program flow chart

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Fig. 5. Pareto curves of 8-FBGs sensor networks with asymmetric spectra

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Fig. 6. Pareto curves of 8-FBGs sensor networks with asymmetric and symmetric spectra

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Fig. 7. Pareto curves of probability distribution of different asymmetric parameters. (a) Different standard deviations; (b) different mean values (<0); (c) different mean values (>0)

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Fig. 8. Pareto curves obtained by NSGA-II algorithm. (a) 4-FBGs; (b) 6-FBGs; (c) 8-FBGs; (d) 10-FBGs

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Fig. 9. BSR and overlapping degree after FBGs sensor network optimization design with different number of FBGs

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Table 1. Parameters of 10 groups of stresses
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Table 1. Parameters of 10 groups of stresses
Parameter 1 2 3 4 5 6 7 8 9 10
μ /με 100 500 -100 -700 -650 -450 -550 250 320 -300
σ /με 300 250 270 280 220 260 320 250 360 280

Table 2. Solutions selected for each group of experiments

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Table 2. Solutions selected for each group of experiments

Network scale	4-FBGs	6-FBGs	8-FBGs	10-FBGs
Center wavelength of FBG1 /nm	1566.1	1563.5	1557.9	1561.8
Center wavelength of FBG2 /nm	1567.3	1564.8	1557.5	1563.1
Center wavelength of FBG3 /nm	1564.5	1561.8	1562.7	1566.8
Center wavelength of FBG4 /nm	1563.4	1560.5	1561.5	1560.4
Center wavelength of FBG5 /nm	—	1535.2	1560.0	1565.3
Center wavelength of FBG6 /nm	—	1562.0	1559.9	1565.2
Center wavelength of FBG7 /nm	—	—	1556.2	1568.2
Center wavelength of FBG8 /nm	—	—	1556.0	1569.7
Center wavelength of FBG9 /nm	—	—	—	1561.2
Center wavelength of FBG10 /nm	—	—	—	1560.3
Bandwidth /nm	6.9	7.3	9.7	12.3
Overlapping degree	0.11	0.11	0.10	0.10
BSR /%	45.5	59.6	59.6	58.8

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Hao Jiang, Chaohui Lin, Jing Chen, Xiren Miao. Multi-Objective Optimal Configuration of Bandwidth Resources in FBG Sensor Network for Asymmetric Overlapping Spectra[J]. Acta Optica Sinica, 2021, 41(10): 1006002

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