Bi-Directional Brillouin Optical Time Domain Analyzer System for Long Range Distributed Sensing
AbstractWe propose and experimentally demonstrate a novel scheme of bi-directional Brillouin time domain analyzer (BD-BOTDA) to extend the sensing range. By deploying two pump-probe pairs at two different wavelengths, the Brillouin frequency shift (BFS) distribution over each half of the whole fiber can be obtained with the simultaneous detection of Brillouin signals in both channels. Compared to the conventional unidirectional BOTDA system of the same sensing range, the proposed BD-BOTDA scheme enables distributed sensing with a performance level comparable to the conventional one with half of the sensing range and a spatial resolution of 2 m, while maintaining the Brillouin signal-to-noise ratio (SNR) and the BFS uncertainty. Based on this technique, we have achieved distributed temperature sensing with a measurement range of 81.9 km fiber at a spatial resolution of 2 m and BFS uncertainty of ~0.44 MHz without introducing any complicated components or schemes. View Full-Text
Scifeed alert for new publicationsNever miss any articles matching your research from any publisher
- Get alerts for new papers matching your research
- Find out the new papers from selected authors
- Updated daily for 49'000+ journals and 6000+ publishers
- Define your Scifeed now
Guo, N.; Wang, L.; Wang, J.; Jin, C.; Tam, H.-Y.; Zhang, A.P.; Lu, C. Bi-Directional Brillouin Optical Time Domain Analyzer System for Long Range Distributed Sensing. Sensors 2016, 16, 2156.
Guo N, Wang L, Wang J, Jin C, Tam H-Y, Zhang AP, Lu C. Bi-Directional Brillouin Optical Time Domain Analyzer System for Long Range Distributed Sensing. Sensors. 2016; 16(12):2156.Chicago/Turabian Style
Guo, Nan; Wang, Liang; Wang, Jie; Jin, Chao; Tam, Hwa-Yaw; Zhang, A. P.; Lu, Chao. 2016. "Bi-Directional Brillouin Optical Time Domain Analyzer System for Long Range Distributed Sensing." Sensors 16, no. 12: 2156.
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.