Brillouin Optical Correlation Domain Analysis Enhanced by Time-Domain Data Processing for Concurrent Interrogation of Multiple Sensing Points

Gukbeen Ryu; Gyu Tae Kim; Kwang Yong Song; Sang Bae Lee; Kwanil Lee

doi:10.1109/JLT.2017.2750174

Brillouin Optical Correlation Domain Analysis Enhanced by Time-Domain Data Processing for Concurrent Interrogation of Multiple Sensing Points

Gukbeen Ryu, Gyu Tae Kim, Kwang Yong Song, Sang Bae Lee, Kwanil Lee

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

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	https://doi.org/10.1109/JLT.2017.2750174
Publication status	Published - 2017 Dec 15

Keywords

Optical fiber sensors
stimulated Brillouin scattering
time domain analysis

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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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 › peer-review

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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.",

keywords = "Optical fiber sensors, stimulated Brillouin scattering, time domain analysis",

author = "Gukbeen Ryu and Kim, {Gyu Tae} and Song, {Kwang Yong} and Lee, {Sang Bae} and Kwanil Lee",

note = "Funding Information: Manuscript received March 17, 2017; revised June 22, 2017, July 28, 2017, and August 10, 2017; accepted August 29, 2017. Date of publication September 7, 2017; date of current version November 27, 2017. This work was supported by the R&D Program (2E26970) funded by Korea Institute of Science and Technology. (Corresponding Author: Kwanil Lee.) G. Ryu is with the School of Electrical Engineering, Korea University, Seoul 02841, South Korea, and also with the Nanophotonics Research Center, Korea Institute of Science and Technology, Seoul 02792, South Korea (e-mail: 215505@kist.re.kr). Publisher Copyright: {\textcopyright} 1983-2012 IEEE. Copyright: Copyright 2018 Elsevier B.V., All rights reserved.",

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AU - Lee, Kwanil

N1 - Funding Information: Manuscript received March 17, 2017; revised June 22, 2017, July 28, 2017, and August 10, 2017; accepted August 29, 2017. Date of publication September 7, 2017; date of current version November 27, 2017. This work was supported by the R&D Program (2E26970) funded by Korea Institute of Science and Technology. (Corresponding Author: Kwanil Lee.) G. Ryu is with the School of Electrical Engineering, Korea University, Seoul 02841, South Korea, and also with the Nanophotonics Research Center, Korea Institute of Science and Technology, Seoul 02792, South Korea (e-mail: 215505@kist.re.kr). Publisher Copyright: © 1983-2012 IEEE. Copyright: Copyright 2018 Elsevier B.V., All rights reserved.

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.

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Brillouin Optical Correlation Domain Analysis Enhanced by Time-Domain Data Processing for Concurrent Interrogation of Multiple Sensing Points

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Keywords

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