Review of Specialty Fiber Based Brillouin Optical Time Domain Analysis Technology

Hu, Dora Juan Juan; Humbert, Georges; Dong, Hui; Zhang, Hailiang; Hao, Jianzhong; Sun, Qizhen

doi:10.3390/photonics8100421

Cited by 18 publications

(10 citation statements)

References 63 publications

(94 reference statements)

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“…In recent years, the discrete BOTDA [ 229 ] and chirped-pulse Φ-OTDR [ 230 ] have demonstrated their competence in detecting hydrogen with standard telecom-grade optical fiber. Moreover, specialty sensing fibers have hugely extended the potential measurands due to their unique properties, for instance, the multicore fibers and ring-core fibers for distributed curvature and bending sensing [ 231 , 232 ], the photonic crystal fibers for distributed hydrostatic pressure sensing [ 233 , 234 , 235 ], and the polymer optical fibers for distributed humidity sensing [ 236 , 237 ] and distributed radiation sensing [ 238 , 239 ]. The hybrid DOFS technology, which combines various standalone sensors to measure more abundant parameters, is a promising tool to explore further applications that will meet the requirements in many different scenarios.…”

Section: Discussionmentioning

confidence: 99%

Hybrid Distributed Optical Fiber Sensor for the Multi-Parameter Measurements

Zhou

Wang

Yang

et al. 2023

Sensors

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Distributed optical fiber sensors (DOFSs) are a promising technology for their unique advantage of long-distance distributed measurements in industrial applications. In recent years, modern industrial monitoring has called for comprehensive multi-parameter measurements to accurately identify fault events. The hybrid DOFS technology, which combines the Rayleigh, Brillouin, and Raman scattering mechanisms and integrates multiple DOFS systems in a single configuration, has attracted growing attention and has been developed rapidly. Compared to a single DOFS system, the multi-parameter measurements based on hybrid DOFS offer multidimensional valuable information to prevent misjudgments and false alarms. The highly integrated sensing structure enables more efficient and cost-effective monitoring in engineering. This review highlights the latest progress of the hybrid DOFS technology for multi-parameter measurements. The basic principles of the light-scattering-based DOFSs are initially introduced, and then the methods and sensing performances of various techniques are successively described. The challenges and prospects of the hybrid DOFS technology are discussed in the end, aiming to pave the way for a vaster range of applications.

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Section: Discussionmentioning

confidence: 99%

Hybrid Distributed Optical Fiber Sensor for the Multi-Parameter Measurements

Zhou

Wang

Yang

et al. 2023

Sensors

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“…BOTDA is based on the stimulated Brillouin scattering (SBS) effect, which is realized by launching a pump pulse and a counter-propagating continuous-wave (CW) probe into the FUT from its two ends, respectively. SBS only occurs locally at the position where the probe and pump light meet [21,22]. The SBS signal is detected at the fiber end where the pump pulse launches, and recorded as a function of time which corresponds to the whole FUT length.…”

Section: Operating Principlementioning

confidence: 99%

Overcoming the Lead Fiber-Induced Limitation on Pulse Repetition Rate in Distributed Fiber Sensors

Zhang

Dong

et al. 2022

Photonics

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Distributed fiber sensor (DFS)-based dynamic sensing has attracted increasing attention thanks to the growing demand in areas such as structural health monitoring and geophysical science. The maximum detectable frequency of DFSs depends on the maximum pulse repetition rate (MPRR), which is limited by the total length of the fiber under test (FUT). In some real-world applications, there is some distance between the interrogator and the monitoring site. Therefore, only a small part of the FUT acts as a sensing fiber (SF), while the other major part just acts as a lead fiber (LF), and the MPRR is limited by the LF and SF. Overcoming the LF-induced extra limitation on the MPRR is a practical problem for many DFS applications. In this paper, to the best of our knowledge, we propose a simple approach for overcoming the LF-induced extra limitation on the MPRR by dividing the DFS interrogator into two parts, for the first time. The proposed approach can be easily implemented for the real-world applicationsof DFSs whose LF is much longer than SF. It has been experimentally validated by using conventional phase-sensitive optical time domain reflectometry and Brillouin optical time domain analysis.

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“…One optical fiber can replace a huge number of discrete sensors, covering distances up to tens of kilometers, providing thousands of measurement points depending on the system spatial resolution [3]. Thanks to the huge development in optical fibers, their immunity to electromagnetic interferences and durability [4,5], DOFS systems can easily outperform conventional sensing systems, not only by the means of measurements quality, but also by the wide spectrum of applications [6][7][8] that can utilize these systems, even in the harsh environments [9].…”

Section: Introductionmentioning

confidence: 99%

The Impact of Optical Fiber Type on the Temperature Measurements in Distributed Optical Fiber Sensor Systems

Łakomski,

Plona,

Guzowski

et al. 2023

PAR

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This paper presents the capabilities of using distributed optical fiber sensors to obtain the temperature profile of an optical path made of silica telecom optical fiber. The impact of the optical fiber type on the temperature measurements is also observed. Two types of optical fibers are tested: standard G.652.D and low-loss G.654.C. DOFS systems for temperature measurements are based on the phenomenon of Raman or Brillouin backscattering. In case of Brillouin-based systems, the spectral properties depend on the type of optical fiber and its parameters. The Brillouin frequency shift depends on the temperature around the fiber, as well as the strain applied to the optical fiber. The presented results show that temperature coefficient can also vary depending on the optical fiber type. For the standard G.652.D optical fiber, the temperature coefficient equals 1.12 MHz/°C and 1.14 MHz/°C depending on the tracked peaks, while for the low-loss G.654.C fiber it equal 1.4 MHz/°C.

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Review of Specialty Fiber Based Brillouin Optical Time Domain Analysis Technology

Cited by 18 publications

References 63 publications

Hybrid Distributed Optical Fiber Sensor for the Multi-Parameter Measurements

Hybrid Distributed Optical Fiber Sensor for the Multi-Parameter Measurements

Overcoming the Lead Fiber-Induced Limitation on Pulse Repetition Rate in Distributed Fiber Sensors

The Impact of Optical Fiber Type on the Temperature Measurements in Distributed Optical Fiber Sensor Systems

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