Abstract

The spatial resolution of an optical-fiber-based Raman distributed temperature sensor is limited by the pulse width of the laser used. We discuss a methodology of increasing spatial resolution by using a single-fiber grid. Spatial resolution improvement of up to 10 times is demonstrated.

© 2010 Optical Society of America

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References

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  1. J. P. Dakin, D. J. Pratt, G. W. Bibby, and J. N. Ross, Electron. Lett. 21, 569 (1985).
    [CrossRef]
  2. R. Berninim, A. Minardo, and L. Zeni, in An Introduction to Optoelectronic Sensors, G.C.Righini, A.Tajani, and A.Cutolo, eds. (World Scientific, 2009), pp. 77–94.
    [CrossRef]
  3. P. Healey, J. Phys. E 19, 334 (1986).
    [CrossRef]
  4. J. P. Dakin, J. Phys. E 20, 954 (1987).
    [CrossRef]
  5. D. A. Thorncraft, M. G. Sceats, and S. B. Pmle, in 16th Australian Conference on Optical Fibre Technology (Institute of Radio Electronics Engineers of Australia, 1991), pp. 183–186.
  6. K. Hotate and M. Tanaka, IEEE Photon. Technol. Lett. 14, 179 (2002).
    [CrossRef]
  7. R. Feced and M. Farhadiroushan, IEEE Photon. Technol. Lett. 9, 1140 (1997).
    [CrossRef]
  8. M. Höbel, J. Ricka, M. Wüthrich, and T. Binkert, Appl. Opt. 34, 2955 (1995).
    [CrossRef] [PubMed]
  9. B-j. Wang, K. Li, B. Shi, and G.-q. Wei, Landslides 6, 61 (2009).
    [CrossRef]
  10. A. V. Panov, arxiv.org, http://arxiv.org/abs/cond-mat/0103092v1.
  11. C. Pandian, M. Kasinathan, S. Sosamma, C. Babu Rao, N. Murali, T. Jayakumar, and B. Raj, J. Opt. Soc. Am. B 26, 2423 (2009).
    [CrossRef]
  12. J. Yadgari, A. Amir, and R. Unger, in Proceedings of the 6th International Conference on Intelligent Systems for Molecular Biology (AAAI Press, 1998), pp. 193–202.
  13. C. Babu Rao, C. Pandian, T. Jayakumar, and B. Raj, India patent application 696/MUM/2009 A, publication July 17, 2009.

2009 (2)

2002 (1)

K. Hotate and M. Tanaka, IEEE Photon. Technol. Lett. 14, 179 (2002).
[CrossRef]

1997 (1)

R. Feced and M. Farhadiroushan, IEEE Photon. Technol. Lett. 9, 1140 (1997).
[CrossRef]

1995 (1)

1987 (1)

J. P. Dakin, J. Phys. E 20, 954 (1987).
[CrossRef]

1986 (1)

P. Healey, J. Phys. E 19, 334 (1986).
[CrossRef]

1985 (1)

J. P. Dakin, D. J. Pratt, G. W. Bibby, and J. N. Ross, Electron. Lett. 21, 569 (1985).
[CrossRef]

Amir, A.

J. Yadgari, A. Amir, and R. Unger, in Proceedings of the 6th International Conference on Intelligent Systems for Molecular Biology (AAAI Press, 1998), pp. 193–202.

Babu Rao, C.

C. Pandian, M. Kasinathan, S. Sosamma, C. Babu Rao, N. Murali, T. Jayakumar, and B. Raj, J. Opt. Soc. Am. B 26, 2423 (2009).
[CrossRef]

C. Babu Rao, C. Pandian, T. Jayakumar, and B. Raj, India patent application 696/MUM/2009 A, publication July 17, 2009.

Berninim, R.

R. Berninim, A. Minardo, and L. Zeni, in An Introduction to Optoelectronic Sensors, G.C.Righini, A.Tajani, and A.Cutolo, eds. (World Scientific, 2009), pp. 77–94.
[CrossRef]

Bibby, G. W.

J. P. Dakin, D. J. Pratt, G. W. Bibby, and J. N. Ross, Electron. Lett. 21, 569 (1985).
[CrossRef]

Binkert, T.

Dakin, J. P.

J. P. Dakin, J. Phys. E 20, 954 (1987).
[CrossRef]

J. P. Dakin, D. J. Pratt, G. W. Bibby, and J. N. Ross, Electron. Lett. 21, 569 (1985).
[CrossRef]

Farhadiroushan, M.

R. Feced and M. Farhadiroushan, IEEE Photon. Technol. Lett. 9, 1140 (1997).
[CrossRef]

Feced, R.

R. Feced and M. Farhadiroushan, IEEE Photon. Technol. Lett. 9, 1140 (1997).
[CrossRef]

Healey, P.

P. Healey, J. Phys. E 19, 334 (1986).
[CrossRef]

Höbel, M.

Hotate, K.

K. Hotate and M. Tanaka, IEEE Photon. Technol. Lett. 14, 179 (2002).
[CrossRef]

Jayakumar, T.

C. Pandian, M. Kasinathan, S. Sosamma, C. Babu Rao, N. Murali, T. Jayakumar, and B. Raj, J. Opt. Soc. Am. B 26, 2423 (2009).
[CrossRef]

C. Babu Rao, C. Pandian, T. Jayakumar, and B. Raj, India patent application 696/MUM/2009 A, publication July 17, 2009.

Kasinathan, M.

Li, K.

B-j. Wang, K. Li, B. Shi, and G.-q. Wei, Landslides 6, 61 (2009).
[CrossRef]

Minardo, A.

R. Berninim, A. Minardo, and L. Zeni, in An Introduction to Optoelectronic Sensors, G.C.Righini, A.Tajani, and A.Cutolo, eds. (World Scientific, 2009), pp. 77–94.
[CrossRef]

Murali, N.

Pandian, C.

C. Pandian, M. Kasinathan, S. Sosamma, C. Babu Rao, N. Murali, T. Jayakumar, and B. Raj, J. Opt. Soc. Am. B 26, 2423 (2009).
[CrossRef]

C. Babu Rao, C. Pandian, T. Jayakumar, and B. Raj, India patent application 696/MUM/2009 A, publication July 17, 2009.

Panov, A. V.

A. V. Panov, arxiv.org, http://arxiv.org/abs/cond-mat/0103092v1.

Pmle, S. B.

D. A. Thorncraft, M. G. Sceats, and S. B. Pmle, in 16th Australian Conference on Optical Fibre Technology (Institute of Radio Electronics Engineers of Australia, 1991), pp. 183–186.

Pratt, D. J.

J. P. Dakin, D. J. Pratt, G. W. Bibby, and J. N. Ross, Electron. Lett. 21, 569 (1985).
[CrossRef]

Raj, B.

C. Pandian, M. Kasinathan, S. Sosamma, C. Babu Rao, N. Murali, T. Jayakumar, and B. Raj, J. Opt. Soc. Am. B 26, 2423 (2009).
[CrossRef]

C. Babu Rao, C. Pandian, T. Jayakumar, and B. Raj, India patent application 696/MUM/2009 A, publication July 17, 2009.

Ricka, J.

Ross, J. N.

J. P. Dakin, D. J. Pratt, G. W. Bibby, and J. N. Ross, Electron. Lett. 21, 569 (1985).
[CrossRef]

Sceats, M. G.

D. A. Thorncraft, M. G. Sceats, and S. B. Pmle, in 16th Australian Conference on Optical Fibre Technology (Institute of Radio Electronics Engineers of Australia, 1991), pp. 183–186.

Shi, B.

B-j. Wang, K. Li, B. Shi, and G.-q. Wei, Landslides 6, 61 (2009).
[CrossRef]

Sosamma, S.

Tanaka, M.

K. Hotate and M. Tanaka, IEEE Photon. Technol. Lett. 14, 179 (2002).
[CrossRef]

Thorncraft, D. A.

D. A. Thorncraft, M. G. Sceats, and S. B. Pmle, in 16th Australian Conference on Optical Fibre Technology (Institute of Radio Electronics Engineers of Australia, 1991), pp. 183–186.

Unger, R.

J. Yadgari, A. Amir, and R. Unger, in Proceedings of the 6th International Conference on Intelligent Systems for Molecular Biology (AAAI Press, 1998), pp. 193–202.

Wang, B-j.

B-j. Wang, K. Li, B. Shi, and G.-q. Wei, Landslides 6, 61 (2009).
[CrossRef]

Wei, G.-q.

B-j. Wang, K. Li, B. Shi, and G.-q. Wei, Landslides 6, 61 (2009).
[CrossRef]

Wüthrich, M.

Yadgari, J.

J. Yadgari, A. Amir, and R. Unger, in Proceedings of the 6th International Conference on Intelligent Systems for Molecular Biology (AAAI Press, 1998), pp. 193–202.

Zeni, L.

R. Berninim, A. Minardo, and L. Zeni, in An Introduction to Optoelectronic Sensors, G.C.Righini, A.Tajani, and A.Cutolo, eds. (World Scientific, 2009), pp. 77–94.
[CrossRef]

Appl. Opt. (1)

Electron. Lett. (1)

J. P. Dakin, D. J. Pratt, G. W. Bibby, and J. N. Ross, Electron. Lett. 21, 569 (1985).
[CrossRef]

IEEE Photon. Technol. Lett. (2)

K. Hotate and M. Tanaka, IEEE Photon. Technol. Lett. 14, 179 (2002).
[CrossRef]

R. Feced and M. Farhadiroushan, IEEE Photon. Technol. Lett. 9, 1140 (1997).
[CrossRef]

J. Opt. Soc. Am. B (1)

J. Phys. E (2)

P. Healey, J. Phys. E 19, 334 (1986).
[CrossRef]

J. P. Dakin, J. Phys. E 20, 954 (1987).
[CrossRef]

Landslides (1)

B-j. Wang, K. Li, B. Shi, and G.-q. Wei, Landslides 6, 61 (2009).
[CrossRef]

Other (5)

A. V. Panov, arxiv.org, http://arxiv.org/abs/cond-mat/0103092v1.

D. A. Thorncraft, M. G. Sceats, and S. B. Pmle, in 16th Australian Conference on Optical Fibre Technology (Institute of Radio Electronics Engineers of Australia, 1991), pp. 183–186.

R. Berninim, A. Minardo, and L. Zeni, in An Introduction to Optoelectronic Sensors, G.C.Righini, A.Tajani, and A.Cutolo, eds. (World Scientific, 2009), pp. 77–94.
[CrossRef]

J. Yadgari, A. Amir, and R. Unger, in Proceedings of the 6th International Conference on Intelligent Systems for Molecular Biology (AAAI Press, 1998), pp. 193–202.

C. Babu Rao, C. Pandian, T. Jayakumar, and B. Raj, India patent application 696/MUM/2009 A, publication July 17, 2009.

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Figures (4)

Fig. 1
Fig. 1

SFG, 21 × 21 , with mesh size 10 cm .

Fig. 2
Fig. 2

Temperature measured by RDTS projected over SFG. Note that the temperature measured by the RDTS is low compared with actual temperature.

Fig. 3
Fig. 3

Temperature profile over SFG, after taking minimum along the two orthogonal projections.

Fig. 4
Fig. 4

Temperature reconstructed over SFG, with improved spatial resolution. Note that the temperature reconstructed is closer to the actual temperature.

Tables (1)

Tables Icon

Table 1 True and Spurious Points, before and after the Minimum is Taken along the Two Orthogonal Projections

Equations (1)

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Error = ( T LR _ x T SFG _ x ) + ( T LR _ y T SFG _ y ) .

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