Low-frequency detection of acoustic signals using fiber as an ultrasonic guide with a distant in-fiber Bragg grating

Leal Wescley A.; Carneiro Mateus B. R.; Freitas Taiane A. M. G.; Marcondes Claudia B.; Ribeiro Ricardo M.

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Low-frequency detection of acoustic signals using fiber as an ultrasonic guide with a distant in-fiber Bragg grating

机译：使用光纤作为超声波引导纤维的电声信号的低频检测，具有远处的光纤布拉格光栅

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This article shows the development of a photonic detector of low-frequency ultrasonic signals. These signals latter reach a sensitive single-mode optical fiber as an acoustic guide conveying the signals (around 43 kHz) over 70 cm to a distant and protected in-fiber Bragg grating. The grating reflects a spectrum centered around 1550 and 2.6 nm bandwidth and is interrogated by a tunable laser in their linear and most sensitive region. As a result, real-time passive demodulation of communication or monitoring of ultrasonic signals propagating through solid materials is possible. The detector may also be applied to other physical media. In this study, a new passive technique to thermally desensitize the fiber-Bragg gratings (FBG) is also proposed, though the proposed technique is not experimentally tested.

机译：本文显示了低频超声信号的光子检测器的开发。这些信号后者达到敏感的单模光纤，作为声学引导，将信号（约43 kHz）输送超过70厘米到远处的纤维纤维布拉格光栅。光栅反射围绕1550和2.6nm带宽的光谱反射，并且通过可调谐激光在其线性和最敏感的区域中询问。结果，可以实时被动解调通信或通过固体材料传播的超声波信号监测。检测器也可以应用于其他物理媒体。在该研究中，还提出了一种新的被动技术，尽管所提出的技术未进行实验测试，但还提出了一种热脱敏光纤光栅（FBG）。

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来源
《Microwave and optical technology letters》 |2018年第4期|共5页
作者
Leal Wescley A.; Carneiro Mateus B. R.; Freitas Taiane A. M. G.; Marcondes Claudia B.; Ribeiro Ricardo M.;
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作者单位

Univ Fed Fluminense Lab Comunicacoes Opt LaCOp Dept Engn Telecomunicacoes BR-24210240 Niteroi RJ Brazil;

Univ Fed Fluminense Lab Comunicacoes Opt LaCOp Dept Engn Telecomunicacoes BR-24210240 Niteroi RJ Brazil;

Univ Fed Fluminense Lab Comunicacoes Opt LaCOp Dept Engn Telecomunicacoes BR-24210240 Niteroi RJ Brazil;

Univ Fed Fluminense Lab Comunicacoes Opt LaCOp Dept Engn Telecomunicacoes BR-24210240 Niteroi RJ Brazil;

Univ Fed Fluminense Lab Comunicacoes Opt LaCOp Dept Engn Telecomunicacoes BR-24210240 Niteroi RJ Brazil;

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正文语种 eng
中图分类光学;
关键词
acoustic communications; acoustic guide; acoustic monitoring; fiber Bragg grating; optical fiber; ultrasound;

机译：声学通信;声学指南;声学监测;光纤布拉格光栅;光纤;超声波;

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1. Low-frequency detection of acoustic signals using fiber as an ultrasonic guide with a distant in-fiber Bragg grating [J] . Leal Wescley A., Carneiro Mateus B. R., Freitas Taiane A. M. G., Microwave and optical technology letters . 2018,第4期

机译：使用光纤作为超声波引导纤维的电声信号的低频检测，具有远处的光纤布拉格光栅
2. Monitoring pipe wall integrity using fiber Bragg grating-based sensing of low-frequency guided ultrasonic waves [J] . Pabitro Ray, Balaji Srinivasan, Krishnan Balasubramaniam, Ultrasonics . 2018,第期

机译：使用基于光纤布拉格光栅的低频引导超声波的光纤光栅监测管壁完整性
3. Ultrasonic hydrophone based on short in-fiber Bragg gratings [J] . N. E. Fisher, D. J. Webb, C. N. Pannell Applied optics . 1998,第33a36期

机译：基于短光纤布拉格光栅的超声波水听器
4. Probe for measuring ultrasonic fields using short in-fiber Bragg gratings [C] . Norman E. Fisher, Univ. of Kent at Canterbury, Canterbury Kent, Optical and Fiber Optic Sensor Systems . 1998

机译：使用短光纤布拉格光栅测量超声场的探头
5. Acoustic emission detection in carbon composite materials using Fiber Bragg Grating optical sensors. [D] . Mabry, Nehemiah J. 2011

机译：使用光纤布拉格光栅光学传感器检测碳复合材料中的声发射。
6. Sensitivity Analysis of Acoustic Emission Detection Using Fiber Bragg Gratings with Different Optical Fiber Diameters [O] . Georgios Violakis, Tri Le-Quang, Sergey A. Shevchik, 2020

机译：不同光纤直径光纤布拉格光栅声发射检测的灵敏度分析
7. Ultrasonic hydrophone based on short in-fiber Bragg gratings [O] . Fisher, N.E., Webb, D.J., Pannell, C.N., 1998

机译：基于短光纤布拉格光栅的超声波水听器
8. Detection, Evaluation, and Optimization of Optical Signals Generated by Fiber Optic Bragg Gratings Under Dynamic Excitations [R] . Adamovsky, Grigory, Lekki, John, Lock, James A. 2002

机译：光纤布拉格光栅在动态激励下产生光学信号的检测，评估和优化

Low-frequency detection of acoustic signals using fiber as an ultrasonic guide with a distant in-fiber Bragg grating

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