Statistical Analysis of SNR in Chirped-pulse ΦOTDR

Fernández‐Ruiz, María R.; Martins, Hugo F.; Costa, Luís; Martín‐López, Sonia; González‐Herráez, Miguel

doi:10.1364/ofs.2018.wf16

Cited by 1 publication

(1 citation statement)

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“…Rayleigh frequency demodulation is another method used to retrieve the strain, possessing the advantages of immunity to coherent fading [ 171 ] and large strain measurement [ 25 ]. Generally, the Rayleigh trace is acquired for different laser frequencies within a given frequency range.…”

Section: Dofss Based On Light Scatteringmentioning

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: Dofss Based On Light Scatteringmentioning

confidence: 99%