Quantitative strain sensing in a multimode fiber using dual frequency speckle pattern tracking

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Quantitative strain sensing in a multimode fiber using dual frequency speckle pattern tracking

机译：使用双频散斑图案跟踪的多模光纤中的定量应变感测

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We report an amplitude-measuring multimode fiber sensor capable of making quantitative strain measurements and extracting the algebraic sign of the strain. The Rayleigh-based sensor probes the fiber with pulses of alternating optical frequency and records the backscattered speckle patterns on a high-speed camera. We show that measuring the change in the speckle pattern induced by a change in optical frequency provides a form of in situ calibration, enabling the sensor to recover the magnitude and algebraic sign of the strain. The sensor, which can be positioned anywhere along 2 km of fiber, has a linear strain response, a 10 kHz bandwidth, and a strain noise of 10.2 p epsilon/ root Hz. (C) 2020 Optical Society of America

机译：我们报告了一种能够进行定量应变测量并提取应变的代数符号的幅度测量多模光纤传感器。基于瑞利的传感器用交替光学频率的脉冲探测光纤，并在高速相机上记录反向散射的散斑图案。我们表明，测量光学频率变化引起的散斑图案的变化提供了一种原位校准的形式，使传感器能够恢复应变的幅度和代数标志。可以沿沿2公里的光纤定位的传感器具有线性应变响应，10kHz带宽和10.2p epsilon / Root Hz的应变噪声。（c）2020美国光学学会

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《Optics Letters》 |2020年第6期|共4页
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正文语种 eng
中图分类计量学;光学;
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1. Quantitative strain sensing in a multimode fiber using dual frequency speckle pattern tracking [J] . Optics Letters . 2020,第6期

机译：使用双频散斑图案跟踪的多模光纤中的定量应变感测
2. Reference Ranges and Regional Patterns of Left Ventricular Strain and Strain Rate Using Two-Dimensional Speckle-Tracking Echocardiography in a Healthy Middle-Aged Black and White Population: The CARDIA Study [J] . Moreira Henrique T., Nwabuo Chike C., Armstrong Anderson C., Journal of the American Society of Echocardiography: official publication of the American Society of Echocardiography . 2017,第7期

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3. Multimode waveguide speckle patterns for compressive sensing [J] . Valley George C., Sefler George A., Shaw T. Justin Optics Letters . 2016,第11期

机译：用于压缩感测的多模波导斑点图案
4. Electronic speckle pattern interferometry using multimode fiber optic bundles for sensing measurement [C] . Wei Liu, Yushan Tan, Xianglin Wang Conference on fiber optic and laser sensors . 1993

机译：使用多模光纤捆绑用于感测测量的电子散斑图案干涉测量
5. Assessment of left atrial function via strain analysis derived from two-dimensional speckle tracking echocardiography in dogs [D] . Dermlim, Angkhana 2019

机译：二维散斑跟踪超声心动图在犬中通过应变分析评估左心房功能
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机译：多模光纤弯曲应变的透射率的定量依赖性

Quantitative strain sensing in a multimode fiber using dual frequency speckle pattern tracking

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