Hao Jiang, Yougang Wang, Jing Chen, Xinyu Huang. Wavelength Detection of Overlapping Spectra in FBG Sensor Network Based on Gated Recurrent Unit Network[J]. Acta Optica Sinica, 2020, 40(7): 0706001
- Acta Optica Sinica
- Vol. 40, Issue 7, 0706001 (2020)
Fig. 1. Structure of series-parallel WDM fiber Bragg grating sensor network
Fig. 2. Overlapping types of FBG reflection spectra. (a) Non-overlapping; (b) partly-overlapping; (c) fully-overlapping
Fig. 3. Wavelength demodulation architecture of GRU model
Fig. 4. Unit structure of GRU network
Fig. 5. Training process of GRU model
Fig. 6. Three typical cases of overlapping spectral wavelength detection. (a) Non-overlapping; (b) partly-overlapping; (c) fully-overlapping
Fig. 7. Effect of training samples on detection performance
Fig. 8. Effect of batch size on detection performance
Fig. 9. Effect of numbers of GRU hidden units on detection performance
Fig. 10. Cumulative probability distribution of RMS for different methods
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Table 1. Wavelength detection results of typical overlapping spectra
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Table 2. Performance comparison of different methods
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