Abstract
We propose a linearly configured Brillouin optical correlation domain analysis system incorporated with time domain data processing, where a fiber under test (FUT) is accessed from single end and multiple sensing points are simultaneously interrogated to extend the measurement range. In our scheme, correlation peaks (CPs) are sequentially generated by the interaction between a pump pulse outgoing from the system and a probe wave reflected from the end of an FUT, where the time-domain data processing is applied to obtain the Brillouin gain spectrum of each CP. In experiments, we demonstrate simultaneous acquisition of Brillouin gain spectra at 982 CPs with a spatial resolution of less than 5 cm and a sensing range extended from 10.3 m to 10.15 km. We also show that the amplitude of frequency modulation (Δf), which has been limited to the Brillouin frequency of an FUT in linear-configured BOCDA systems, can be enlarged without definite limitation by the time-domain data processing. In the experimental confirmation Δf of 15.6 GHz, about 1.5 times of the Brillouin frequency of FUT, is successfully applied to simultaneous analysis of 98 CPs by the time-domain data processing.
| Original language | English |
|---|---|
| Article number | 8725565 |
| Pages (from-to) | 4728-4733 |
| Number of pages | 6 |
| Journal | Journal of Lightwave Technology |
| Volume | 37 |
| Issue number | 18 |
| DOIs | |
| Publication status | Published - 2019 Sep 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
Linearly Configured Brillouin Optical Correlation Domain Analysis System Incorporating Time-Domain Data Processing. / Ryu, Gukbeen; Kim, Gyu Tae; Song, Kwang Yong; Lee, Sang Bae; Lee, Kwanil.
In: Journal of Lightwave Technology, Vol. 37, No. 18, 8725565, 15.09.2019, p. 4728-4733.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Linearly Configured Brillouin Optical Correlation Domain Analysis System Incorporating Time-Domain Data Processing
AU - Ryu, Gukbeen
AU - Kim, Gyu Tae
AU - Song, Kwang Yong
AU - Lee, Sang Bae
AU - Lee, Kwanil
PY - 2019/9/15
Y1 - 2019/9/15
N2 - We propose a linearly configured Brillouin optical correlation domain analysis system incorporated with time domain data processing, where a fiber under test (FUT) is accessed from single end and multiple sensing points are simultaneously interrogated to extend the measurement range. In our scheme, correlation peaks (CPs) are sequentially generated by the interaction between a pump pulse outgoing from the system and a probe wave reflected from the end of an FUT, where the time-domain data processing is applied to obtain the Brillouin gain spectrum of each CP. In experiments, we demonstrate simultaneous acquisition of Brillouin gain spectra at 982 CPs with a spatial resolution of less than 5 cm and a sensing range extended from 10.3 m to 10.15 km. We also show that the amplitude of frequency modulation (Δf), which has been limited to the Brillouin frequency of an FUT in linear-configured BOCDA systems, can be enlarged without definite limitation by the time-domain data processing. In the experimental confirmation Δf of 15.6 GHz, about 1.5 times of the Brillouin frequency of FUT, is successfully applied to simultaneous analysis of 98 CPs by the time-domain data processing.
AB - We propose a linearly configured Brillouin optical correlation domain analysis system incorporated with time domain data processing, where a fiber under test (FUT) is accessed from single end and multiple sensing points are simultaneously interrogated to extend the measurement range. In our scheme, correlation peaks (CPs) are sequentially generated by the interaction between a pump pulse outgoing from the system and a probe wave reflected from the end of an FUT, where the time-domain data processing is applied to obtain the Brillouin gain spectrum of each CP. In experiments, we demonstrate simultaneous acquisition of Brillouin gain spectra at 982 CPs with a spatial resolution of less than 5 cm and a sensing range extended from 10.3 m to 10.15 km. We also show that the amplitude of frequency modulation (Δf), which has been limited to the Brillouin frequency of an FUT in linear-configured BOCDA systems, can be enlarged without definite limitation by the time-domain data processing. In the experimental confirmation Δf of 15.6 GHz, about 1.5 times of the Brillouin frequency of FUT, is successfully applied to simultaneous analysis of 98 CPs by the time-domain data processing.
KW - Optical fiber sensors
KW - stimulated Brillouin scattering
KW - time domain analysis
UR - http://www.scopus.com/inward/record.url?scp=85072556614&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85072556614&partnerID=8YFLogxK
U2 - 10.1109/JLT.2019.2919448
DO - 10.1109/JLT.2019.2919448
M3 - Article
AN - SCOPUS:85072556614
VL - 37
SP - 4728
EP - 4733
JO - Journal of Lightwave Technology
JF - Journal of Lightwave Technology
SN - 0733-8724
IS - 18
M1 - 8725565
ER -