scholarly journals Exposed-core microstructured optical fibers for real-time fluorescence sensing

2009 ◽  
Vol 17 (21) ◽  
pp. 18533 ◽  
Author(s):  
Stephen C. Warren-Smith ◽  
Heike Ebendorff-Heidepriem ◽  
Tze Cheung Foo ◽  
Roger Moore ◽  
Claire Davis ◽  
...  
Keyword(s):  
Real Time ◽  
Optical Fibers ◽  
Fluorescence Sensing ◽  
Microstructured Optical Fibers

scholarly journals Real Time Measuring System of Multiple Chemical Parameters Using Microstructured Optical Fibers Based Sensors

2018 ◽  
Vol 18 (13) ◽  
pp. 5343-5351 ◽  
Author(s):  
Aitor Lopez-Aldaba ◽  
Diego Lopez-Torres ◽  
Cesar Elosua Aguado ◽  
Francisco J. Arregui ◽  
Jean-Louis Auguste ◽  
...  
Keyword(s):  
Real Time ◽  
Optical Fibers ◽  
Measuring System ◽  
Chemical Parameters ◽  
Microstructured Optical Fibers ◽  
Multiple Chemical

Noncontact characterization of microstructured optical fibers coating in real-time

2021 ◽  
Author(s):  
Timur Ermatov ◽  
Ivan Gnusov ◽  
Julia Skibina ◽  
Roman Noskov ◽  
Dmitry Gorin
Keyword(s):  
Real Time ◽  
Optical Fibers ◽  
Microstructured Optical Fibers

scholarly journals Quantification of the fluorescence sensing performance of microstructured optical fibers compared to multi-mode fiber tips

2016 ◽  
Vol 24 (16) ◽  
pp. 18541 ◽  
Author(s):  
Erik P. Schartner ◽  
Georgios Tsiminis ◽  
Matthew R. Henderson ◽  
Stephen C. Warren-Smith ◽  
Tanya M. Monro
Keyword(s):  
Optical Fibers ◽  
Fluorescence Sensing ◽  
Microstructured Optical Fibers ◽  
Multi Mode ◽  
Sensing Performance

scholarly journals Enhanced fluorescence sensing using microstructured optical fibers: a comparison of forward and backward collection modes

2008 ◽  
Vol 33 (13) ◽  
pp. 1473 ◽  
Author(s):  
Shahraam Afshar V. ◽  
Yinlan Ruan ◽  
Stephen C. Warren-Smith ◽  
Tanya M. Monro
Keyword(s):  
Optical Fibers ◽  
Fluorescence Sensing ◽  
Enhanced Fluorescence ◽  
Microstructured Optical Fibers

Fabrications and applications of fiber gratings based on microstructured optical fibers

2013 ◽  
Vol 30 (1) ◽  
pp. 23-29 ◽  
Author(s):  
Yiping Wang ◽  
Changrui Liao ◽  
Jiangtao Zhou ◽  
Yingjie Liu ◽  
Zhengyong Li ◽  
...  
Keyword(s):  
Optical Fibers ◽  
Fiber Gratings ◽  
Microstructured Optical Fibers

Bragg Grating Inscription in GeO -Doped Microstructured Optical Fibers

2010 ◽  
Vol 28 (10) ◽  
pp. 1459-1467 ◽  
Author(s):  
Thomas Geernaert ◽  
Martin Becker ◽  
Pawel Mergo ◽  
Tomasz Nasilowski ◽  
Jan Wojcik ◽  
...  
Keyword(s):  
Optical Fibers ◽  
Bragg Grating ◽  
Microstructured Optical Fibers

scholarly journals Development of Real-Time Time Gated Digital (TGD) OFDR Method and Its Performance Verification

Sensors ◽  
2021 ◽  
Vol 21 (14) ◽  
pp. 4865
Author(s):  
Kinzo Kishida ◽  
Artur Guzik ◽  
Ken’ichi Nishiguchi ◽  
Che-Hsien Li ◽  
Daiji Azuma ◽  
...  
Keyword(s):  
Real Time ◽  
Optical Fibers ◽  
High Speed ◽  
Oil And Gas ◽  
Scattered Light ◽  
Oil And Gas Industry ◽  
High Signal ◽  
Chirp Pulse ◽  
Sound Waves ◽  
Industry Applications

Distributed acoustic sensing (DAS) in optical fibers detect dynamic strains or sound waves by measuring the phase or amplitude changes of the scattered light. This contrasts with other distributed (and more conventional) methods, such as distributed temperature (DTS) or strain (DSS), which measure quasi-static physical quantities, such as intensity spectrum of the scattered light. DAS is attracting considerable attention as it complements the conventional distributed measurements. To implement DAS in commercial applications, it is necessary to ensure a sufficiently high signal-noise ratio (SNR) for scattered light detection, suppress its deterioration along the sensing fiber, achieve lower noise floor for weak signals and, moreover, perform high-speed processing within milliseconds (or sometimes even less). In this paper, we present a new, real-time DAS, realized by using the time gated digital-optical frequency domain reflectometry (TGD-OFDR) method, in which the chirp pulse is divided into overlapping bands and assembled after digital decoding. The developed prototype NBX-S4000 generates a chirp signal with a pulse duration of 2 μs and uses a frequency sweep of 100 MHz at a repeating frequency of up to 5 kHz. It allows one to detect sound waves at an 80 km fiber distance range with spatial resolution better than a theoretically calculated value of 2.8 m in real time. The developed prototype was tested in the field in various applications, from earthquake detection and submarine cable sensing to oil and gas industry applications. All obtained results confirmed effectiveness of the method and performance, surpassing, in conventional SM fiber, other commercially available interrogators.

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