High-temperature measurement with Brillouin optical time domain analysis of an annealed fused-silica single-mode fiber

2016 ◽  
Vol 41 (14) ◽  
pp. 3177 ◽  
Author(s):  
Yi Bao ◽  
Genda Chen
Keyword(s):  
High Temperature ◽  
Temperature Measurement ◽  
Time Domain ◽  
Single Mode ◽  
Time Domain Analysis ◽  
Domain Analysis ◽  
Single Mode Fiber ◽  
Fused Silica ◽  
High Temperature Measurement ◽  
Optical Time

1200°C high-temperature distributed optical fiber sensing using Brillouin optical time domain analysis

2016 ◽  
Vol 55 (21) ◽  
pp. 5471 ◽  
Author(s):  
Pengbai Xu ◽  
Yongkang Dong ◽  
Dengwang Zhou ◽  
Cheng Fu ◽  
Juwang Zhang ◽  
...  
Keyword(s):  
High Temperature ◽  
Optical Fiber ◽  
Time Domain ◽  
Time Domain Analysis ◽  
Domain Analysis ◽  
Fiber Sensing ◽  
Optical Fiber Sensing ◽  
Optical Time ◽  
Distributed Optical Fiber

scholarly journals Hybrid Fiber-Optic Sensing Integrating Brillouin Optical Time-Domain Analysis and Fiber Bragg Grating for Long-Range Two-Parameter Measurement

Sensors ◽  
2021 ◽  
Vol 21 (12) ◽  
pp. 4224
Author(s):  
Shien-Kuei Liaw ◽  
Chi-Wen Liao ◽  
Meng-Hsuan Tsai ◽  
Dong-Chang Li ◽  
Shu-Ming Yang ◽  
...  
Keyword(s):  
Time Domain ◽  
Fiber Optic ◽  
Single Mode ◽  
Time Domain Analysis ◽  
Domain Analysis ◽  
Sensing Element ◽  
Hybrid Fiber ◽  
Fiber System ◽  
Fiber Sensing ◽  
Optical Time

Distributed fiber sensing (DFS) can provide real-time signals and warnings. The entire length of fiber optic cable can act as a sensing element, but the accuracy is sometimes limited. On the other hand, point-to-point fiber sensing (PPFS) is usually implemented using one or more fiber Bragg gratings (FBGs) at specific positions along with the fiber for the monitoring of specific parameters (temperature, strain, pressure, and so on). However, the cost becomes expensive when the number of FBGs increases. A hybrid fiber sensing scheme is thus proposed, combining the advantages of DFS and PPFS. It is based on a Brillouin optical time-domain analysis (BOTDA) fiber system with additional FBGs embedded at certain positions where it is necessary to detect specific parameters. The hybrid fiber sensing system has the advantages of full sensing coverage at essential locations that need to be carefully monitored. In our work, the test results showed that the proposed system could achieve a sensing distance of 16 km with the single-mode fiber with a 2 m spatial resolution. For FBG parameter measurements, the temperature variation was 52 °C, from 25 °C to 77 °C, with a temperature sensitivity of 23 pm/°C, and the strain was from 0 to 400 µε, with a strain sensitivity of 0.975 pm/µε, respectively, using two FBGs.

Single-fiber-based Brillouin Optical Time Domain Analysis with Far-end modulation

2021 ◽  
pp. 1-1
Author(s):  
Xia Gao ◽  
Xiaobin Hong ◽  
Sheng Wang ◽  
Xizi Sun ◽  
Liangming Xiong ◽  
...  
Keyword(s):  
Time Domain ◽  
Time Domain Analysis ◽  
Domain Analysis ◽  
Single Fiber ◽  
Optical Time

scholarly journals Brillouin optical time-domain analysis sensor assisted by Brillouin distributed amplification of pump pulses

2015 ◽  
Vol 23 (23) ◽  
pp. 30448 ◽  
Author(s):  
Javier Urricelqui ◽  
Mikel Sagues ◽  
Alayn Loayssa
Keyword(s):  
Time Domain ◽  
Time Domain Analysis ◽  
Domain Analysis ◽  
Optical Time

Proposal and simulation of differential double-pulse pair Brillouin optical time-domain analysis

2013 ◽  
Author(s):  
Jianguan Tang ◽  
Wenping Luo ◽  
Beiqing Chen ◽  
Huiyong Guo ◽  
Cui Zhang
Keyword(s):  
Time Domain ◽  
Time Domain Analysis ◽  
Domain Analysis ◽  
Double Pulse ◽  
Pulse Pair ◽  
Optical Time
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