Analysis of a distributed fiber-optic temperature sensor using single-photon detectors
Analysis of a distributed fiber-optic temperature sensor using single-photon detectors
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DOI：
10.1364/oe.20.003456
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发表时间：
2012-02-13
期刊：
影响因子：
3.8
通讯作者：
Nam, Sae Woo
中科院分区：
文献类型：
--
作者：
Dyer, Shellee D.;Tanner, Michael G.;Nam, Sae Woo
我们展示了一种使用超导纳米线单光子探测器和单光子计数技术的高精度分布式光纤温度传感器。我们的演示使用廉价的标准电信波长的单模光纤作为传感光纤，从而实现极低损耗的实验并与现有光纤网络兼容。结果表明，温度测量的不确定度随积分周期的延长而减小，但最终会受到校准不确定度的限制。在空间分辨率为1厘米、积分周期为60秒的情况下，温度不确定度可达3K量级。此外，我们还表明，测量受到系统不确定性的影响，例如极化衰落，这可以通过极化分集接收器来减少。(C)2012年美国光学学会
We demonstrate a high-accuracy distributed fiber-optic temperature sensor using superconducting nanowire single-photon detectors and single-photon counting techniques. Our demonstration uses inexpensive single-mode fiber at standard telecommunications wavelengths as the sensing fiber, which enables extremely low-loss experiments and compatibility with existing fiber networks. We show that the uncertainty of the temperature measurement decreases with longer integration periods, but is ultimately limited by the calibration uncertainty. Temperature uncertainty on the order of 3 K is possible with spatial resolution of the order of 1 cm and integration period as small as 60 seconds. Also, we show that the measurement is subject to systematic uncertainties, such as polarization fading, which can be reduced with a polarization diversity receiver. (C) 2012 Optical Society of America