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arXiv · 1308.0512

217 km long distance photon-counting optical time-domain reflectometry based on ultra-low noise up-conversion single photon detector

Guo-Liang Shentu·Qi-Chao Sun·Xiao Jiang·Xiao-Dong Wang·Jason S. Pelc·M. M. Fejer·Qiang Zhang·Jian-Wei Pan
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Abstract

We demonstrate a photon-counting optical time-domain reflectometry with 42.19 dB dynamic range using an ultra-low noise up-conversion single photon detector. By employing the long wave pump technique and a volume Bragg grating, we reduce the noise of our up-conversion single photon detector, and achieve a noise equivalent power of -139.7 dBm/sqrt(Hz). We perform the OTDR experiments using a fiber of length 216.95 km, and show that our system can identify defects along the entire fiber length with a distance resolution better than 10 cm in a measurement time of 13 minutes.

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Guo-Liang Shentu, Qi-Chao Sun, Xiao Jiang, Xiao-Dong Wang, Jason S. Pelc, M. M. Fejer, Qiang Zhang, Jian-Wei Pan. 2013-08-02. 217 km long distance photon-counting optical time-domain reflectometry based on ultra-low noise up-conversion single photon detector. https://doi.org/10.1364/oe.21.024674

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