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Journal of Lightwave Technology

Journal of Lightwave Technology


  • Vol. 28, Iss. 14 — Jul. 15, 2010
  • pp: 2062–2067

Time-Domain Distributed Fiber Sensor With 1 cm Spatial Resolution Based on Brillouin Dynamic Grating

Kwang Yong Song, Sanghoon Chin, Nikolay Primerov, and Luc Thévenaz

Journal of Lightwave Technology, Vol. 28, Issue 14, pp. 2062-2067 (2010)

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We demonstrate an optical time-domain distributed fiber sensor showing the highest spatial resolution ever reported based on Brillouin dynamic grating in a polarization-maintaining fiber. In our scheme, the acoustic gratings containing the information on the local Brillouin frequency are generated by a long pump pulse in one polarization, and read out by a short probe pulse in the orthogonal polarization at a clearly distinct optical frequency from the pump. In the experiment, distributed temperature measurements over a 20 m fiber are performed with 1.2 cm spatial resolution.

© 2010 IEEE

Kwang Yong Song, Sanghoon Chin, Nikolay Primerov, and Luc Thévenaz, "Time-Domain Distributed Fiber Sensor With 1 cm Spatial Resolution Based on Brillouin Dynamic Grating," J. Lightwave Technol. 28, 2062-2067 (2010)

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