Reflectogram shape deformation in distributed fibre systems in the presence of spontaneous noise in the probe radiation

IF 0.9 4区 工程技术 Q3 Engineering Quantum Electronics Pub Date : 2021-12-01 DOI:10.1070/qel17661
N.I. Kalmykov, D. Kovalenko, I. Lobach, S. Kablukov
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Abstract

We report a study of the effect of spontaneous emission-induced noise in probe pulsed radiation on the reflectogram shape deformation in a distributed temperature sensor based on Raman scattering of light. Since the fraction of spontaneous emission in the used erbiumdoped amplifier can reach 50 % of the total power, this leads to deviations of reflectograms in the temperature sensor from the theoretical exponential dependence and, as a result, can yield a temperature measurement error of several degrees. Filtering the radiation with an amplitude modulator makes it possible to reduce these deviations. The influence of spontaneous emission on reflectograms is studied theoretically and experimentally.
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探针辐射中存在自发噪声时分布式光纤系统的反射图形状变形
本文报道了一种基于光拉曼散射的分布式温度传感器,研究了探针脉冲辐射中自发发射引起的噪声对反射图形状变形的影响。由于在所使用的掺铒放大器中自发发射的分数可以达到总功率的50%,这导致温度传感器中的反射图偏离理论指数依赖,因此可以产生数度的温度测量误差。用调幅器过滤辐射可以减少这些偏差。从理论上和实验上研究了自发辐射对反射图的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Quantum Electronics
Quantum Electronics 工程技术-工程:电子与电气
CiteScore
3.00
自引率
11.10%
发文量
95
审稿时长
3-6 weeks
期刊介绍: Quantum Electronics covers the following principal headings Letters Lasers Active Media Interaction of Laser Radiation with Matter Laser Plasma Nonlinear Optical Phenomena Nanotechnologies Quantum Electronic Devices Optical Processing of Information Fiber and Integrated Optics Laser Applications in Technology and Metrology, Biology and Medicine.
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