Photon Counting OTDR: Advantages and Limitations

被引：107

作者：

Eraerds, Patrick ^{[1
]}

Legre, Matthieu ^{[2
]}

Zhang, Jun ^{[1
]}

Zbinden, Hugo ^{[1
]}

Gisin, Nicolas ^{[1
]}

机构：

[1] Univ Geneva, Appl Phys Grp, CH-1211 Geneva 4, Switzerland

[2] Quantique SA, CH-1227 Geneva, Switzerland

来源：

JOURNAL OF LIGHTWAVE TECHNOLOGY | 2010年 / 28卷 / 06期

关键词：

Distributed detection; fiber metrology; optical time-domain reflectometry; photon counting; AVALANCHE PHOTODIODES;

D O I：

10.1109/JLT.2009.2039635

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper, we provide a detailed insight into photon-counting optical time-domain reflectometer (nu-OTDR) operation, ranging from Geiger-mode operation of avalanche photodiodes (APD), analysis of different APD bias schemes, to the discussion of OTDR perspectives. Our results demonstrate that an InGaAs/InP APD-based nu-OTDR has the potential of outperforming the dynamic range of a conventional state-of-the-art OTDR by 10 dB, as well as the two-point resolution by a factor of 20. Considering the trace acquisition speed of nu-OTDRs, we find that a combination of rapid gating for high photon flux and free running mode for low photon flux is the most efficient solution. Concerning dead zones, our results are less promising. Without additional measures, e.g., an optical shutter, the photon counting approach is not competitive.

引用

页码：952 / 964

页数：13

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