Weibing Gan, Ru Jiang, Chengli Li, Minghong Yang. Continuous Grating Array Sensing Technology and Its Applications[J]. Laser & Optoelectronics Progress, 2021, 58(13): 1306007
- Laser & Optoelectronics Progress
- Vol. 58, Issue 13, 1306007 (2021)
![On line fabrication system of grating array [6]](/richHtml/lop/2021/58/13/1306007/img_1.jpg)
Fig. 1. On line fabrication system of grating array [6]
![Grating array spectra. (a) Synthetic interferometry[8]; (b) mask method[9]](/richHtml/lop/2021/58/13/1306007/img_2.jpg)
![Demodulation principle of grating array based on double SOA[11]](/Images/icon/loading.gif){kind=icon}
Fig. 3. Demodulation principle of grating array based on double SOA[11]
Fig. 4. Principle diagram of distributed vibration sensing based on grating array and 3×3 coupler algorithm [18]
Fig. 5. Temperature monitoring system of air-cooled island based on grating array sensing technology
Fig. 6. Fire monitoring system for cable corridor[21]. (a) Arrangement of sensing optical cable; (b) demodulation principle of grating array
Fig. 7. Temperature curves of all measuring points at different moments[21]
Fig. 8. Distributed vibration monitoring system based on grating array sensing technology[22]. (a) Schematic of vibration cable laying; (b) system architecture
Fig. 9. System external intrusion and vibration signal recognition. (a) Crusher test scenario; (b) vibration curves at different operating conditions
Fig. 10. Oil well monitoring system based on grating array sensing technology. (a) Oil well monitoring test scenario; (b) distributed temperature monitoring curves
Fig. 11. Vibration signals of optical cable at different depths when oil well wall is knocked. (a) Being suspended at 10 m; (b) being suspended at 480 m; (c) being close to shaft wall at 10 m; (d) being close to shaft wall at 480 m
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