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In this paper, we report on a distributed sensing system of phase-sensitive optical time-domain reflectometer (Φ-OTDR) based on bi-directional Raman amplification. With the bi-directional Raman amplification, the transmission loss of the optical fiber can be compensated efficiently. The experimental characterization of evenly detected signals along the whole sensing distance of 74 km with 20 m spatial resolution is successfully demonstrated, resulting in the longest distributed sensing system based phase-sensitive optical time-domain reflectometer reported so far, to the best of our knowledge. The influences of different incident powers and pump powers on Φ-OTDR are studied experimentally.
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Keywords:
- phase-sensitive time-domain reflectometer /
- distributed optical-fiber sensor /
- Raman amplification
[1] Taylor H F, Lee C E 1993 U. S. Patent 5 194 847 [1993-03-16]
[2] Park J, Lee W, Taylor H F 1998 Proc. SPIE 3555 49
[3] Juarez J C, Taylor H F 2007 Appl. Opt. 46 1968
[4] Lu Y L, Zhu T, Chen L, Bao X Y 2010 J. Lightw. Technol. 28 3243
[5] Xie K L, Rao Y J, Ran Z L 2008 Acta Opt. Sin. 28 569 (in Chinese) [谢孔利, 饶云江, 冉曾令 2008 光学学报 28 569]
[6] Luo J, Rao Y J, Yue J F, Ran Z L 2009 Chin. J. Sci. Instrum. 30 1123 (in Chinese) [罗俊, 饶云江, 岳剑锋, 冉曾令 2009 仪器仪表学报 30 1123]
[7] Yun P, Chi R H, Li Y G, Lü K C 2004 Acta Phys. Sin. 53 4229 (in Chinese) [运鹏, 迟荣华, 李乙钢, 吕可诚 2004 物理学报 53 4229]
[8] Ma Y H, Xie S Z, Chen M H 2005 Acta Phys. Sin. 54 123 (in Chinese) [马永红, 谢世种, 陈明华 2005 物理学报 54 123]
[9] Tong Z, Wei H, Jian S S 2006 Acta Phys. Sin. 55 1873 (in Chinese) [童治, 魏淮, 简水生 2006 物理学报 55 1873]
[10] Ania-Castañón J D 2004 Opt. Express 12 4372
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[1] Taylor H F, Lee C E 1993 U. S. Patent 5 194 847 [1993-03-16]
[2] Park J, Lee W, Taylor H F 1998 Proc. SPIE 3555 49
[3] Juarez J C, Taylor H F 2007 Appl. Opt. 46 1968
[4] Lu Y L, Zhu T, Chen L, Bao X Y 2010 J. Lightw. Technol. 28 3243
[5] Xie K L, Rao Y J, Ran Z L 2008 Acta Opt. Sin. 28 569 (in Chinese) [谢孔利, 饶云江, 冉曾令 2008 光学学报 28 569]
[6] Luo J, Rao Y J, Yue J F, Ran Z L 2009 Chin. J. Sci. Instrum. 30 1123 (in Chinese) [罗俊, 饶云江, 岳剑锋, 冉曾令 2009 仪器仪表学报 30 1123]
[7] Yun P, Chi R H, Li Y G, Lü K C 2004 Acta Phys. Sin. 53 4229 (in Chinese) [运鹏, 迟荣华, 李乙钢, 吕可诚 2004 物理学报 53 4229]
[8] Ma Y H, Xie S Z, Chen M H 2005 Acta Phys. Sin. 54 123 (in Chinese) [马永红, 谢世种, 陈明华 2005 物理学报 54 123]
[9] Tong Z, Wei H, Jian S S 2006 Acta Phys. Sin. 55 1873 (in Chinese) [童治, 魏淮, 简水生 2006 物理学报 55 1873]
[10] Ania-Castañón J D 2004 Opt. Express 12 4372
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