Abstract
We propose and experimentally demonstrate a Brillouin optical correlation domain analysis system adopting time-domain data processing and differential measurement for simultaneous interrogation of multiple sensing points. Continuous probe and pulsed pump waves are simultaneously frequency-modulated by a MHz-order sinusoidal RF wave so that multiple correlation peaks are sequentially generated according to the propagation of the pump along a fiber under test (FUT). The Brillouin gain spectrum of each correlation peak is obtained and interrogated by moving window averaging of the probe wave with a span of the period of the RF modulation, leading to the simultaneous monitoring of the multiple sensing points. In experiments, 148 correlation peaks are concurrently interrogated with a spatial resolution less than 3 cm along a 1530 m FUT.
| Original language | English |
|---|---|
| Article number | 8030064 |
| Pages (from-to) | 5311-5316 |
| Number of pages | 6 |
| Journal | Journal of Lightwave Technology |
| Volume | 35 |
| Issue number | 24 |
| DOIs | |
| Publication status | Published - 2017 Dec 15 |
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Keywords
- Optical fiber sensors
- stimulated Brillouin scattering
- time domain analysis
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
Cite this
Brillouin Optical Correlation Domain Analysis Enhanced by Time-Domain Data Processing for Concurrent Interrogation of Multiple Sensing Points. / Ryu, Gukbeen; Kim, Gyu-Tae; Song, Kwang Yong; Lee, Sang Bae; Lee, Kwanil.
In: Journal of Lightwave Technology, Vol. 35, No. 24, 8030064, 15.12.2017, p. 5311-5316.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Brillouin Optical Correlation Domain Analysis Enhanced by Time-Domain Data Processing for Concurrent Interrogation of Multiple Sensing Points
AU - Ryu, Gukbeen
AU - Kim, Gyu-Tae
AU - Song, Kwang Yong
AU - Lee, Sang Bae
AU - Lee, Kwanil
PY - 2017/12/15
Y1 - 2017/12/15
N2 - We propose and experimentally demonstrate a Brillouin optical correlation domain analysis system adopting time-domain data processing and differential measurement for simultaneous interrogation of multiple sensing points. Continuous probe and pulsed pump waves are simultaneously frequency-modulated by a MHz-order sinusoidal RF wave so that multiple correlation peaks are sequentially generated according to the propagation of the pump along a fiber under test (FUT). The Brillouin gain spectrum of each correlation peak is obtained and interrogated by moving window averaging of the probe wave with a span of the period of the RF modulation, leading to the simultaneous monitoring of the multiple sensing points. In experiments, 148 correlation peaks are concurrently interrogated with a spatial resolution less than 3 cm along a 1530 m FUT.
AB - We propose and experimentally demonstrate a Brillouin optical correlation domain analysis system adopting time-domain data processing and differential measurement for simultaneous interrogation of multiple sensing points. Continuous probe and pulsed pump waves are simultaneously frequency-modulated by a MHz-order sinusoidal RF wave so that multiple correlation peaks are sequentially generated according to the propagation of the pump along a fiber under test (FUT). The Brillouin gain spectrum of each correlation peak is obtained and interrogated by moving window averaging of the probe wave with a span of the period of the RF modulation, leading to the simultaneous monitoring of the multiple sensing points. In experiments, 148 correlation peaks are concurrently interrogated with a spatial resolution less than 3 cm along a 1530 m FUT.
KW - Optical fiber sensors
KW - stimulated Brillouin scattering
KW - time domain analysis
UR - http://www.scopus.com/inward/record.url?scp=85040316892&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85040316892&partnerID=8YFLogxK
U2 - 10.1109/JLT.2017.2750174
DO - 10.1109/JLT.2017.2750174
M3 - Article
AN - SCOPUS:85040316892
VL - 35
SP - 5311
EP - 5316
JO - Journal of Lightwave Technology
JF - Journal of Lightwave Technology
SN - 0733-8724
IS - 24
M1 - 8030064
ER -