Experimental Demonstration on 2.5-m Spatial Resolution and 1 $^{\circ}$ C Temperature Uncertainty Over Long-Distance BOTDA With Combined Raman Amplification and Optical Pulse Coding
作者： Xin-Hong Jia , Yun-Jiang Rao , Kun Deng , Zi-Xin Yang , Liang Chang
关键词: Raman amplification 、 Spectrum analyzer 、 Image resolution 、 Accuracy and precision 、 Brillouin scattering 、 Optics 、 Stimulated emission 、 Materials science 、 Scattering 、 Brillouin zone
摘要: The combination of Raman amplification and optical pulse coding (OPC) is proposed to reduce the frequency uncertainty in a long-distance Brillouin time-domain analyzer (BOTDA) under higher spatial resolution. experimental characterization temperature sensing with measurement accuracy ~ 1°C 2.5-m resolution over whole length fiber demonstrated. composed 49.6-km at 10.8-GHz shift (BFS) 25-km 11.005 GHz.
harvard.edu
sci-hub.se 参考文章(12)
G. Brambilla, T.P. Newson, M. Alahbabi, Y.T. Cho, Brillouin based OTDR with measurement range of 85 km using combined EDFA and Raman amplification conference on lasers and electro optics. ,vol. 1, ,(2004)
Marcelo A. Soto, Gabriele Bolognini, Fabrizio Di Pasquale, Analysis of pulse modulation format in coded BOTDA sensors Optics Express. ,vol. 18, pp. 14878- 14892 ,(2010) , 10.1364/OE.18.014878
Hao Liang, Wenhai Li, Nicolas Linze, Liang Chen, Xiaoyi Bao, High-resolution DPP-BOTDA over 50 km LEAF using return-to-zero coded pulses. Optics Letters. ,vol. 35, pp. 1503- 1505 ,(2010) , 10.1364/OL.35.001503
Yongkang Dong, Liang Chen, Xiaoyi Bao, System optimization of a long-range Brillouin-loss-based distributed fiber sensor. Applied Optics. ,vol. 49, pp. 5020- 5025 ,(2010) , 10.1364/AO.49.005020
Sonia Martin-Lopez, Mercedes Alcon-Camas, Felix Rodriguez, Pedro Corredera, Juan Diego Ania-Castañon, Luc Thévenaz, Miguel Gonzalez-Herraez, Brillouin optical time-domain analysis assisted by second-order Raman amplification Optics Express. ,vol. 18, pp. 18769- 18778 ,(2010) , 10.1364/OE.18.018769
Wenhai Li, Xiaoyi Bao, Yun Li, Liang Chen, Differential pulse-width pair BOTDA for high spatial resolution sensing Optics Express. ,vol. 16, pp. 21616- 21625 ,(2008) , 10.1364/OE.16.021616
Marcelo A. Soto, Gabriele Bolognini, Fabrizio Di Pasquale, Luc Thévenaz, Simplex-coded BOTDA fiber sensor with 1 m spatial resolution over a 50 km range Optics Letters. ,vol. 35, pp. 259- 261 ,(2010) , 10.1364/OL.35.000259
Mohamed N. Alahbabi, Yuh Tat Cho, Trevor P. Newson, Peter C. Wait, Arthur H. Hartog, Influence of modulation instability on distributed optical fiber sensors based on spontaneous Brillouin scattering Journal of the Optical Society of America B. ,vol. 21, pp. 1156- 1160 ,(2004) , 10.1364/JOSAB.21.001156
Xin-Hong Jia, Yun-Jiang Rao, Liang Chang, Chao Zhang, Zeng-Ling Ran, Enhanced Sensing Performance in Long Distance Brillouin Optical Time-Domain Analyzer Based on Raman Amplification: Theoretical and Experimental Investigation Journal of Lightwave Technology. ,vol. 28, pp. 1624- 1630 ,(2010) , 10.1109/JLT.2010.2046719
E. E. Fenimore, G. S. Weston, Fast delta Hadamard transform Applied Optics. ,vol. 20, pp. 3058- 3067 ,(1981) , 10.1364/AO.20.003058