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Journal of Lightwave Technology

Journal of Lightwave Technology


  • Vol. 30, Iss. 16 — Aug. 15, 2012
  • pp: 2583–2588

Photon-Counting Optical Time-Domain Reflectometry Using a Superconducting Nanowire Single-Photon Detector

Junhui Hu, Qingyuan Zhao, Xuping Zhang, Labao Zhang, Xiaodong Zhao, Lin Kang, and Peiheng Wu

Journal of Lightwave Technology, Vol. 30, Issue 16, pp. 2583-2588 (2012)

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A novel photon-counting optical time-domain reflectometry (ν-OTDR) based on superconducting nanowire single- photon detector (SNSPD) is proposed and demonstrated experimentally. Benefiting from the low noise equivalent power (NEP), high repetition rate and low timing jitter of the SNSPD, our ν-OTDR system achieves a dynamic range of 22 dB after measurement time of 15 minutes. This obtainable dynamic range corresponds to a sensing length of 110 km. The system exhibits 6.0 cm spatial resolution at the end of 2 km and 1.1 m spatial resolution at the end of 26 km standard single-mode fiber. Considering the performance we obtained now and the increasing improvement of the fabrication technology, the SNSPD is promising in the field of fiber sensors.

© 2012 IEEE

Junhui Hu, Qingyuan Zhao, Xuping Zhang, Labao Zhang, Xiaodong Zhao, Lin Kang, and Peiheng Wu, "Photon-Counting Optical Time-Domain Reflectometry Using a Superconducting Nanowire Single-Photon Detector," J. Lightwave Technol. 30, 2583-2588 (2012)

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