Proposal of Brillouin optical correlation-domain reflectometry (BOCDR)
TLDR
A Brillouin optical correlation-domain reflectometry (BOCDR), which can measure the distribution of strain and/or temperature along an optical fiber from a single end, by detecting spontaneous BrillouIn scattering with controlling the interference of continuous lightwaves is proposed.Abstract:
We propose a Brillouin optical correlation-domain reflectometry (BOCDR), which can measure the distribution of strain and/or temperature along an optical fiber from a single end, by detecting spontaneous Brillouin scattering with controlling the interference of continuous lightwaves. In a pulse-based conventional Brillouin optical time-domain reflectometry (BOTDR), it is difficult in principle to achieve a spatial resolution less than 1 m, and the measurement time is as long as 5-10 minutes. On the contrary, the continuous-wave-based BOCDR can exceed the limit of 1-m resolution, and realize much faster measurement and random access to measuring positions. Spatial resolution of 40 cm was experimentally demonstrated with sampling rate of 50 Hz.read more
Citations
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Journal ArticleDOI
Ultrahigh-speed distributed Brillouin reflectometry
TL;DR: This work demonstrates real-time distributed measurement with an intrinsically one-end-access reflectometry configuration by using a correlation-domain technique and discusses some drawbacks of this ultrahigh-speed configuration, including the reduced measurement accuracy, lowered spatial resolution and limited strain dynamic range.
Journal ArticleDOI
Single-shot BOTDA based on an optical chirp chain probe wave for distributed ultrafast measurement.
Dengwang Zhou,Yongkang Dong,Benzhang Wang,Chao Pang,Dexin Ba,Hongying Zhang,Zhiwei Lu,Hui Li,Xiaoyi Bao +8 more
TL;DR: A team of researchers from China and Canada has developed an innovative technique that generates a probe wave comprising short optical chirps that can be quickly demodulated by injecting a single-shot pump pulse into the fiber, which enables distributed ultrafast strain measurement with a single pump pulse.
Journal ArticleDOI
Experimental study of Brillouin scattering in perfluorinated polymer optical fiber at telecommunication wavelength
Yosuke Mizuno,Kentaro Nakamura +1 more
TL;DR: In this paper, the Brillouin threshold power of a perfluorinated graded-index polymer optical fiber (POF) with 120μm core diameter was investigated using a laser with an operating wavelength of 1.55μm.
Journal ArticleDOI
Going beyond 1000000 resolved points in a Brillouin distributed fiber sensor: theoretical analysis and experimental demonstration
TL;DR: This work proposes and experimentally demonstrate an ultimately optimized distributed fiber sensor capable of resolving 2100000 independent points, which corresponds to a one-order-of-magnitude improvement compared to the state- of-the-art.
Journal ArticleDOI
Potential of Brillouin scattering in polymer optical fiber for strain-insensitive high-accuracy temperature sensing.
Yosuke Mizuno,Kentaro Nakamura +1 more
TL;DR: These unique BFS dependences indicate that the Brillouin scattering in PFGI-POFs has a big potential for strain-insensitive high-accuracy temperature sensing.
References
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Journal ArticleDOI
Simple distributed fiber sensor based on Brillouin gain spectrum analysis
TL;DR: A novel configuration of a distributed fiber sensor by Brillouin gain analysis using a single laser source, and the required light signals are all generated with an electro-optic modulator, resulting in high stability and excellent reliability of the measuring setup.
Journal ArticleDOI
BOTDA-nondestructive measurement of single-mode optical fiber attenuation characteristics using Brillouin interaction: theory
TL;DR: In this article, a Brillouin optical-fiber time-domain analysis (BOTDA) was proposed to analyze the attenuation characteristics of the optical fibers nondestructively.
Journal Article
Measurement of Brillouin Gain Spectrum Distribution along an Optical Fiber Using a Correlation-Based Technique - Proposal, Experiment and Simulation -
Kazuo Hotate,Takemi Hasegawa +1 more
Journal ArticleDOI
A technique to measure distributed strain in optical fibers
TL;DR: In this paper, a technique based on Brillouin optical fiber time-domain analysis (BOTDA) was proposed for optical fiber wound on drums at various tensions is presented, achieving better than 2*10/sup -5/ and a spatial resolution of 100 m.
Journal ArticleDOI
Distributed strain measurement with millimeter-order spatial resolution based on Brillouin optical correlation domain analysis
TL;DR: Distributed strain sensing with millimeter-order spatial resolution is demonstrated in optical fibers based on Brillouin optical correlation domain analysis and a novel beat lock-in detection scheme is introduced to suppress background noises coming from the reflection of BrillouIn pump waves.
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