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

Autor:	Shentu, Guo-Liang, Sun, Qi-Chao, Jiang, Xiao, Wang, Xiao-Dong, Pelc, Jason S., Fejer, M. M., Zhang, Qiang, Pan, Jian-Wei
Rok vydání:	2013
Předmět:	Quantum Physics Physics - Optics
Zdroj:	Optics Express, 21, 24674 (2013)
Druh dokumentu:	Working Paper
DOI:	10.1364/OE.21.024674
Popis:	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. Comment: 6 pages, 3 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1308.0512 Zobrazit plný text záznamu View this record from Arxiv