Coherent optical frequency domain reflectometry for interrogation of bend-based fiber optic hydrocarbon sensors

R.M. Lopez; V.V. Spirin; M.G. Shlyagin; S.V. Miridonov; G. Beltran; E.A. Kuzin; A. Marquez Lucero

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Coherent optical frequency domain reflectometry for interrogation of bend-based fiber optic hydrocarbon sensors

机译：相干光频域反射法用于基于弯曲的光纤碳氢化合物传感器的询问

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The paper presents distributed fiber optic bending sensor for petroleum hydrocarbon leak detection based on coherent optical frequency domain reflectometry (C-OFDR) technique. In order to introduce bending losses a sensitive polymer, which reversibly swells under hydrocarbon influence is employed. In this work we used lumped reflectors, namely fiber Bragg gratings, placed between distributed sensitive elements. Design of proposed sensor utilizes the principle of distributed detection with section localization (DDSL) of perturbation. Analysis of signal-to-noise ratio (SNR) for multi-reflectors system was performed. We have demonstrated that the C-OFDR technique with bending sensor is capable to detect hydrocarbon presence within a few minutes for 20-cm perturbation-length with spatial resolution about 0.5 m for strong perturbation.

机译：本文提出了一种基于相干光频域反射法（C-OFDR）的用于石油烃泄漏检测的分布式光纤弯曲传感器。为了引入弯曲损失，使用在烃影响下可逆溶胀的敏感聚合物。在这项工作中，我们使用集总反射器，即光纤布拉格光栅，放置在分布式敏感元件之间。所提出的传感器的设计利用了带有扰动的局部定位（DDSL）的分布式检测原理。进行了多反射器系统的信噪比（SNR）分析。我们已经证明，带有弯曲传感器的C-OFDR技术能够在几分钟内检测到20厘米扰动长度的烃类存在，而对于强扰动，空间分辨率约为0.5 m。

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来源
《Optical fiber technology》 |2004年第1期|p.79-90|共12页
作者
R.M. Lopez; V.V. Spirin; M.G. Shlyagin; S.V. Miridonov; G. Beltran; E.A. Kuzin; A. Marquez Lucero;
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作者单位

Division de Fisica Aplicada, CICESE, A.P. 2732, Ensenada, B.C., Mexico;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类无线电电子学、电信技术;
关键词
fiber optic distributed hydrocarbon sensor; bragg grating; C-OFDR;

机译：光纤分布式碳氢化合物传感器;布拉格光栅;C-OFDR;

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3. Theoretical suppression of cavity interferences in a fiber Bragg grating array interrogated with coherent optical frequency domain reflectometry [J] . Abdi AM, Kost AR Smart Materials & Structures . 2006,第5期

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4. Coherent optical frequency domain reflectometry for interrogation of microbend and macrobend-based fiber optic hydrocarbon sensors [C] . R.M. Lopez, V. V. Spirin, M.G. Shlyagin, Conference on Smart Structures and Materials 2001: Sensory Phenomena and Measurement Instrumentation for Smart Structures and Materials Mar 5-6, 2001, Newport Beach, USA . 2001

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5. Distributed Fiber Optic Sensors for Monitoring Spatially Continuous Strain and Quasi-Distributed Refractive Index Using Optical Frequency Domain Reflectometry [D] . Jothibasu, Sasi. 2018

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6. Incoherent Optical Frequency-Domain Reflectometry Based on Homodyne Electro-Optic Downconversion for Fiber-Optic Sensor Interrogation [O] . Juan Clement, Haroldo Maestre, Germán Torregrosa, 2019

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7. Analytical investigation of a novel interrogation approach of fiber Bragg grating sensors using Optical Frequency Domain Reflectometry [O] . Yüksel Kıvılcım, Pala Deniz 2016

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Coherent optical frequency domain reflectometry for interrogation of bend-based fiber optic hydrocarbon sensors

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