Fully distributed pressure sensing with ultra-high-sensitivity using side-hole fibers

Zhang, Li; Yang, Zhisheng; Szostkiewicz, Lukasz; Markiewicz, Krzysztof; Nasiłowski, Tomasz; Thévenaz, Luc

doi:10.1364/ofs.2018.wf13

Cited by 9 publications

(4 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Besides, OTDR has been included in many distributed fiber optic sensing systems [2]. In particular, OTDR-based distributed fiber optic sensors can monitor temperature [3], vibration [4], pressure [5], among others. As a result, OTDR has been considered a crucial technology for many applications, including agricultural [6] and oil-gas industries [7].…”

Section: Introductionmentioning

confidence: 99%

Overcoming the OTDR dead-zone using a few-mode fiber

Ashry

Mao

Wang

et al. 2021

Photonic Instrumentation Engineering VIII

View full text Add to dashboard Cite

Optical-time-domain-reflectometer (OTDR) suffers from the existence of dead-zones along a deployed fiber under test (FUT). Within a dead-zone, OTDR typically fails to provide any reliable diagnostic information. We here use a fewmode fiber (FMF) to completely cancel the OTDR dead-zone produced by the front facet reflection of the FUT. In particular, we launch the optical pulses in the form of the LP01 mode into the FMF, and meanwhile we record the Rayleigh signal from the higher-order modes. The developed system successfully monitors the amplitude and frequency of a vibration event produced by a piezoelectric transducer (PZT) located within the dead-zone.

show abstract

Section: Introductionmentioning

confidence: 99%

Overcoming the OTDR dead-zone using a few-mode fiber

Ashry

Mao

Wang

et al. 2021

Photonic Instrumentation Engineering VIII

View full text Add to dashboard Cite

show abstract

“…An important milestone for DOFS was the measurement of the difference in the effective refractive index of modes with orthogonal polarization in a birefringent fiber. This leads to the ability to measure a wider range of parameters, for example pressure [5], or makes it possible to distinguish between the strain and temperature influencing the optical fiber under test [6]. These results usually utilize methods based on Rayleigh scattering due to its higher sensitivity in comparison with other techniques.…”

Section: Introductionmentioning

confidence: 99%

Intermodal measurements in few-mode fibers with phase- sensitive OTDR

Markiewicz

Kaczorowski

Yang

et al. 2021

Optical Fiber Sensors Conference 2020 Special Edition

View full text Add to dashboard Cite

show abstract

“…However, due to the recent development of specialty optical fibers like few-mode fibers [6], photonic crystal fibers [7,8] and hollow-core fibers [9], the breadth of potential applications for DOFSs has got enlarged. The synergy between specialty optical fibers and DOFSs makes it now possible to measure parameters that cannot be measured with the use of standard single-mode fibers, such as pressure sensing [10], axial stress sensing [11], or gas concentration [12]. On the other hand, multicore fibers (MCFs) were initially developed to face the capacity crunch of the optical fiber networks based on single-core fibers [13].…”

Section: Introductionmentioning

confidence: 99%

High-resolution distributed shape sensing using phase-sensitive optical time-domain reflectometry and multicore fibers

Szostkiewicz¹,

Soto²,

Yang³

et al. 2019

Opt. Express

Self Cite

View full text Add to dashboard Cite

In this paper, a highly-sensitive distributed shape sensor based on a multicore fiber (MCF) and phase-sensitive optical time-domain reflectometry (ϕ-OTDR) is proposed and experimentally demonstrated. The implemented system features a high strain sensitivity (down to ∼0.3 µε) over a 24 m-long MCF with a spatial resolution of 10 cm. The results demonstrate good repeatability of the relative fiber curvature and bend orientation measurements. Changes in the fiber shape are successfully retrieved, showing detectable displacements of the free moving fiber end as small as 50 µm over a 60 cm-long fiber. In addition, the proposed technique overcomes cross-sensitivity issues between strain and temperature. To the best of our knowledge, the results presented in this work provide the first demonstration of distributed shape sensing based on ϕ-OTDR using MCFs. This high-sensitivity technique proves to be a promising approach for a wide range of new applications such as dynamic, long distance and three-dimensional distributed shape sensing.

show abstract

Fully distributed pressure sensing with ultra-high-sensitivity using side-hole fibers

Abstract: A highly sensitive distributed pressure sensing system (< 20 hPa) based on phase sensitive optical time-domain reflectometry with side air holes fiber is proposed, reaching a sensing range of 1.05 km with a 5 cm spatial resolution.

Cited by 9 publications

References 12 publications

Overcoming the OTDR dead-zone using a few-mode fiber

Overcoming the OTDR dead-zone using a few-mode fiber

Intermodal measurements in few-mode fibers with phase- sensitive OTDR

High-resolution distributed shape sensing using phase-sensitive optical time-domain reflectometry and multicore fibers

Contact Info

Product

Resources

About