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Phase-sensitive optical time domain reflectometry (-OTDR) has the advantages of fast response and high sensitivity. Therefore, it can realize fully distributed monitoring of weak vibrations along an optical fiber, which is of great value in many applications such as perimeter security and structural health monitoring. However, the optical background noise in the -OTDR will disturb the extraction of effective signals and limit the performance of this system. The optical background noise mainly includes the laser center frequency drift, the polarization-relevance noise and the distortion measurement due to the nonlinear relationship between optical fiber strain and interference intensity. In this paper, the generating mechanism of these optical background noise was analyzed and the corresponding noise suppression methods were proposed. The experiment results showed that the proposed methods could suppress the optical background noise effectively and improve the sensing performance significantly.
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Keywords:
- phase sensitive optical time domain reflectometry /
- optical background noise /
- laser frequency drift /
- polarization-relevance noise
[1] Taylor H F, Lee C E 1993 U.S. Patent 5194847[1993-03-16]
[2] Bucaro J, Carome E 1978 Appl. Opt. 17 330
[3] Ran Z L, Rao Y J, Liu W J, Liao X, Chiang K S 2008 Opt. Express 16 2252
[4] Tsai P, Sun F, Xiao G, Zhang Z 2008 IEEE Photonics Tech. L. 20 300
[5] Lu Y L, Zhu T, Chen L, Bao X 2010 J. Lightwave Technol. 28 3243
[6] Bao X Y, Chen L 2011 Sensor 11 4152
[7] Bi W H, Yang X P, Li J Y, Fu X H, Fu G B 2014 Chinese Journal of Lasers 41 1205007 (in Chinese)[毕卫红, 杨希鹏, 李敬阳, 付兴虎, 付广博2014中国激光41 1205007]
[8] Martins H F, Martin-Lopez S, Corredera P, Filograno M L, Frazao O 2014 J. Lightwave Technol. 32 1510
[9] Wang Z N, Zeng J J, Li J, Fan M Q, Wu H, Peng F, Rao Y J 2014 Opt. Lett. 39 5866
[10] Juarez J C, Maier E W, Choi K N, Taylor H F 2005 J. Lightwave Technol. 23 2081
[11] Barnoski M, Jensen S 1976 Appl. Opt. 15 2112
[12] Aoyama K, Nakagawa K, Itoh T 1981 IEEE J. Quantum Electron. 17 862
[13] Gold M P 1985 J. Lightwave Technol. 3 39
[14] Healey P 1981 Electron. Lett. 17 62
[15] Healey P 1984 Electron. Lett. 20 30
[16] Healey P 1984 Electron. Lett. 20 443
[17] Li Q, Zhang C X, Li L J, Zhong X, Li C S 2014 Chinese Journal of Laser 41 0305003 (in Chinese)[李勤, 张春熹, 李立京, 钟翔, 李传声2014中国激光41 0305003]
[18] Martins H F, Martin-Lopez S, Corredera P 2013 J. Lightwave Technol. 31 3631
[19] Mermelstein M D, Posey Jr R, Johnson G A, Vohra S T 2001 Opt. Lett. 26 58
[20] Zhong X, Zhang C, Li L, Liang S, Li Q, L Q 2014 Appl. Opt. 53 4645
[21] Andrea G, Luca P 2000 Opt. Lett. 25 384
[22] Jones R C 1941 JOSA 31 488
[23] Barlow A J 1985 J. Lightwave Technol. 3 135
[24] Wang F, Zhang X, Wang X, Chen H 2013 Opt. Lett. 38 2437
[25] Juan C, Taylor H F 2005 Opt. Lett. 30 3284
[26] Zhu F, Zhang X P, Xia L, Guo Z, Zhang Y X 2015 IEEE Photonic Tech. 27 2523
[27] Lu Y L, Zhu T, Chen L, Bao X Y 2010 J. Lightwave Technol. 28 3243
[28] Zhu F, Zhang Y X, Xia L, Wu X L, Zhang X P 2015 J. Lightwave Technol. 33 4775
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[1] Taylor H F, Lee C E 1993 U.S. Patent 5194847[1993-03-16]
[2] Bucaro J, Carome E 1978 Appl. Opt. 17 330
[3] Ran Z L, Rao Y J, Liu W J, Liao X, Chiang K S 2008 Opt. Express 16 2252
[4] Tsai P, Sun F, Xiao G, Zhang Z 2008 IEEE Photonics Tech. L. 20 300
[5] Lu Y L, Zhu T, Chen L, Bao X 2010 J. Lightwave Technol. 28 3243
[6] Bao X Y, Chen L 2011 Sensor 11 4152
[7] Bi W H, Yang X P, Li J Y, Fu X H, Fu G B 2014 Chinese Journal of Lasers 41 1205007 (in Chinese)[毕卫红, 杨希鹏, 李敬阳, 付兴虎, 付广博2014中国激光41 1205007]
[8] Martins H F, Martin-Lopez S, Corredera P, Filograno M L, Frazao O 2014 J. Lightwave Technol. 32 1510
[9] Wang Z N, Zeng J J, Li J, Fan M Q, Wu H, Peng F, Rao Y J 2014 Opt. Lett. 39 5866
[10] Juarez J C, Maier E W, Choi K N, Taylor H F 2005 J. Lightwave Technol. 23 2081
[11] Barnoski M, Jensen S 1976 Appl. Opt. 15 2112
[12] Aoyama K, Nakagawa K, Itoh T 1981 IEEE J. Quantum Electron. 17 862
[13] Gold M P 1985 J. Lightwave Technol. 3 39
[14] Healey P 1981 Electron. Lett. 17 62
[15] Healey P 1984 Electron. Lett. 20 30
[16] Healey P 1984 Electron. Lett. 20 443
[17] Li Q, Zhang C X, Li L J, Zhong X, Li C S 2014 Chinese Journal of Laser 41 0305003 (in Chinese)[李勤, 张春熹, 李立京, 钟翔, 李传声2014中国激光41 0305003]
[18] Martins H F, Martin-Lopez S, Corredera P 2013 J. Lightwave Technol. 31 3631
[19] Mermelstein M D, Posey Jr R, Johnson G A, Vohra S T 2001 Opt. Lett. 26 58
[20] Zhong X, Zhang C, Li L, Liang S, Li Q, L Q 2014 Appl. Opt. 53 4645
[21] Andrea G, Luca P 2000 Opt. Lett. 25 384
[22] Jones R C 1941 JOSA 31 488
[23] Barlow A J 1985 J. Lightwave Technol. 3 135
[24] Wang F, Zhang X, Wang X, Chen H 2013 Opt. Lett. 38 2437
[25] Juan C, Taylor H F 2005 Opt. Lett. 30 3284
[26] Zhu F, Zhang X P, Xia L, Guo Z, Zhang Y X 2015 IEEE Photonic Tech. 27 2523
[27] Lu Y L, Zhu T, Chen L, Bao X Y 2010 J. Lightwave Technol. 28 3243
[28] Zhu F, Zhang Y X, Xia L, Wu X L, Zhang X P 2015 J. Lightwave Technol. 33 4775
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