The use of fibre optic distributed sensing technology to detect changes in sediment overburden

2017 ◽  
Vol 34 (2) ◽  
pp. 63-74 ◽  
Author(s):  
Y Ouyang ◽  
R Hird ◽  
MD Bolton
Keyword(s):  
Distributed Sensing ◽  
Fibre Optic ◽  
Sensing Technology

A ten channel fibre-optic device for distributed sensing of underground hydrocarbon leakage

2000 ◽  
Vol 2 (6) ◽  
pp. 670-673 ◽  
Author(s):  
Laurie J. Ritchie ◽  
Clive P. Ferguson ◽  
Conrad Bessant ◽  
Selwayan Saini
Keyword(s):  
Distributed Sensing ◽  
Fibre Optic

Dual-Purpose Fibre Optic System Providing Simultaneous, Real-Time Communications and Distributed Vibration Sensing for Pipeline Applications

1998 ◽  
Author(s):  
E. Tapanes
Keyword(s):  
Real Time ◽  
Vibration Monitoring ◽  
Fibre Optic ◽  
Dual Purpose ◽  
Integrity Testing ◽  
Sensing Technology ◽  
Channel Bandwidth ◽  
Vibration Sensing ◽  
Fibre Optic System ◽  
Optic Communication

A proprietary fibre optic sensing technology has been developed and is capable of simultaneously utilising an existing fibre optic communication cable as an integrity-testing sensing cable, thus providing continuous, real-time monitoring of the fibre cable and any structure near the cable (ie., ground, tunnels, ducts, pipes, buildings, equipment, vessels, etc.). With this system, simultaneous fibre optic communications and real-time vibration monitoring was demonstrated using a wavelength multiplexed fibre system for a channel bandwidth of 500 MHz over 18 km of standard singlemode fibre. Real-time vibration monitoring was also demonstrated using standard singlemode and multimode fibre over lengths of 28 km and 53 km, respectively. Trials of the system are currently underway in Australia and the first commercial field installation with this capability is to be completed in mid-1998 in Indonesia. This paper highlights the benefits and potential of this dual-capacity system and details results obtained to-date.

scholarly journals Distributed Sensing Based on Interferometry and Polarization Methods for Use in Fibre Infrastructure Protection

Sensors ◽  
2019 ◽  
Vol 19 (8) ◽  
pp. 1810
Author(s):  
Petr Munster ◽  
Tomas Horvath ◽  
Josef Vojtech
Keyword(s):  
Direct Detection ◽  
Average Power ◽  
Distributed Sensing ◽  
Acoustic Vibrations ◽  
Fibre Optic ◽  
Laboratory Measurements ◽  
Unexpected Events ◽  
Infrastructure Protection ◽  
Sensing Systems

Fibre optic infrastructures are very important, and therefore, it is necessary to protect them from fibre cuts. Most fibre cuts are caused by digging activity, and many network operators seek appropriate solutions enabling detection of possible unexpected events (predict these cuts) and subsequent network outages. In most cases, there is no need to locate events, and only information regarding the occurrence of the event is sufficient. Direct detection-based distributed fibre optic sensing systems appear to be an appropriate solution, allowing digging to be detected before the fibre breaks. The average power of such signals is relatively small, and there is no interference with other signals in the fibre. We performed laboratory measurements to compare the sensitivity and accuracy of interferometric and polarization systems for acoustic vibrations. In the case of interferometric systems, the reference and sensing arms were in the same cable, and both were subjected to acoustic vibrations.

scholarly journals Distributed sensing technology of high-spatial resolution based on dense ultra-short FBG array with large multiplexing capacity

2017 ◽  
Vol 25 (23) ◽  
pp. 28112 ◽  
Author(s):  
Gui Xin ◽  
Li Zhengying ◽  
Wang Fan ◽  
Wang Yiming ◽  
Wang Changjia ◽  
...  
Keyword(s):  
Spatial Resolution ◽  
High Spatial Resolution ◽  
Distributed Sensing ◽  
Sensing Technology

Progress of Fiber-Optic Time-Varying Disturbance Distributed Sensing Technology

2010 ◽  
Vol 47 (9) ◽  
pp. 090601
Author(s):  
方捻 Fang Nian ◽  
王陆唐 Wang Lutang ◽  
黄肇明 Huang Zhaoming
Keyword(s):  
Fiber Optic ◽  
Distributed Sensing ◽  
Time Varying ◽  
Sensing Technology

Rapid exchange ultra-thin microcatheter using fibre-optic sensing technology for measurement of intracoronary fractional flow reserve

2015 ◽  
Vol 11 (4) ◽  
pp. 428-432 ◽  
Author(s):  
Roberto Diletti ◽  
Nicolas M. Van Mieghem ◽  
Marco Valgimigli ◽  
Antonis Karanasos ◽  
Bert R.C. Everaert ◽  
...  
Keyword(s):  
Fractional Flow Reserve ◽  
Fibre Optic ◽  
Fractional Flow ◽  
Flow Reserve ◽  
Rapid Exchange ◽  
Sensing Technology
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