Acta Photonica Sinica, Volume. 53, Issue 11, 1130002(2024)
Transformer Fault Characteristic Gas Optical Feedback Frequency Locking Asymmetric Linear F-P Cavity Enhanced Raman Spectroscopy Detection
Figures & Tables(8)
Fig. 1. Phase analysis of resonant light and direct reflection light in optical feedback process
Fig. 2. The feedback field strength under different feedback coefficients
Fig. 3. The feedback field intensity under different cavity input mirror reflectivity
Fig. 4. Effect of cavity input mirror reflectivity on optical feedback frequency locking
Fig. 5. Optical feedback frequency locking asymmetric linear F-P cavity enhanced Raman spectroscopy detection platform
Fig. 6. Measurement results of laser-based transverse mode in cavity
Fig. 7. Single component transformer fault characteristic standard gas Raman spectroscopy
Table 1. Transformer main fault characteristic gas characteristic Raman spectrum peak and platform detection limit
View tableView in ArticleTable 1. Transformer main fault characteristic gas characteristic Raman spectrum peak and platform detection limit
Gas Characteristic Raman
spectrum peak/cm-1
Signal intensity/（a.u） Noise intensity/（a.u） SNR Limit of detection/ （μL·L-1） CH4 2 917 507 862 23 22 080.96 1.3 C2H6 2 955 408 865 30 13 628.83 4.4 C2H4 3 020 294 234 27 10 897.56 2.7 C2H2 1 972 427 738 17 25 161.06 1.2 CO 2 143 53 994 19 2 841.79 10.5 CO2 1 388 9 513 16 594.56 5.1
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Fu WAN, Yaotian BAI, Rui WANG, Lei ZHU, Yingkai LONG, Weigen CHEN. Transformer Fault Characteristic Gas Optical Feedback Frequency Locking Asymmetric Linear F-P Cavity Enhanced Raman Spectroscopy Detection[J]. Acta Photonica Sinica, 2024, 53(11): 1130002
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Received: Apr. 9, 2024
Accepted: May. 20, 2024
Published Online: Jan. 8, 2025
The Author Email: WAN Fu (wanfuhappy@163.com)
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