The use of Walsh functions in modulating pump light of high-spatial- resolution BOTDA with NRZ pulses

Mohd Saiful Dzulkefly Bin Zan; Tatsuya Tsumuraya; Tsuneo Horiguchi

doi:10.1117/12.968584

The use of Walsh functions in modulating pump light of high-spatial- resolution BOTDA with NRZ pulses

Mohd Saiful Dzulkefly Bin Zan, Tatsuya Tsumuraya, Tsuneo Horiguchi

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

2 Citations (Scopus)

Abstract

We have previously introduced phase modulation into pulsed pump of Brillouin Optical Time Domain Analysis (BOTDA) in order to obtain high spatial resolution. In this study, we propose to use Walsh functions in coding nonreturn-to-zero (NRZ) formatted pump pulses of the high-spatial-resolution BOTDA to increase signal-to-noise ratio (SNR). Contrary to previous reports, it is numerically and experimentally verified that the use of the Walsh functions in the high-spatial-resolution BOTDA allows the increase in SNR without deteriorating its spatial resolution expected. We demonstrate measurements with 1.5 dB improvement in SNR and with approximately 0.2 m spatial resolution.

Original language	English
Title of host publication	22nd International Conference on Optical Fiber Sensors
DOIs	https://doi.org/10.1117/12.968584
Publication status	Published - 2012 Dec 1
Event	22nd International Conference on Optical Fiber Sensors - Beijing, China Duration: 2012 Oct 15 → 2012 Oct 19

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	8421
ISSN (Print)	0277-786X

Conference

Conference	22nd International Conference on Optical Fiber Sensors
Country/Territory	China
City	Beijing
Period	12/10/15 → 12/10/19

Keywords

BOTD1 fiber sensor
Brillouin frequency shift
Stimulated Brillouin scattering (SBS)
Walsh functions

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

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10.1117/12.968584

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The use of Walsh functions in modulating pump light of high-spatial- resolution BOTDA with NRZ pulses. / Bin Zan, Mohd Saiful Dzulkefly; Tsumuraya, Tatsuya; Horiguchi, Tsuneo.

22nd International Conference on Optical Fiber Sensors. 2012. 84219J (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 8421).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Bin Zan, MSD, Tsumuraya, T & Horiguchi, T 2012, The use of Walsh functions in modulating pump light of high-spatial- resolution BOTDA with NRZ pulses. in 22nd International Conference on Optical Fiber Sensors., 84219J, Proceedings of SPIE - The International Society for Optical Engineering, vol. 8421, 22nd International Conference on Optical Fiber Sensors, Beijing, China, 12/10/15. https://doi.org/10.1117/12.968584

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title = "The use of Walsh functions in modulating pump light of high-spatial- resolution BOTDA with NRZ pulses",

abstract = "We have previously introduced phase modulation into pulsed pump of Brillouin Optical Time Domain Analysis (BOTDA) in order to obtain high spatial resolution. In this study, we propose to use Walsh functions in coding nonreturn-to-zero (NRZ) formatted pump pulses of the high-spatial-resolution BOTDA to increase signal-to-noise ratio (SNR). Contrary to previous reports, it is numerically and experimentally verified that the use of the Walsh functions in the high-spatial-resolution BOTDA allows the increase in SNR without deteriorating its spatial resolution expected. We demonstrate measurements with 1.5 dB improvement in SNR and with approximately 0.2 m spatial resolution.",

keywords = "BOTD1 fiber sensor, Brillouin frequency shift, Stimulated Brillouin scattering (SBS), Walsh functions",

author = "{Bin Zan}, {Mohd Saiful Dzulkefly} and Tatsuya Tsumuraya and Tsuneo Horiguchi",

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AU - Bin Zan, Mohd Saiful Dzulkefly

AU - Tsumuraya, Tatsuya

AU - Horiguchi, Tsuneo

PY - 2012/12/1

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N2 - We have previously introduced phase modulation into pulsed pump of Brillouin Optical Time Domain Analysis (BOTDA) in order to obtain high spatial resolution. In this study, we propose to use Walsh functions in coding nonreturn-to-zero (NRZ) formatted pump pulses of the high-spatial-resolution BOTDA to increase signal-to-noise ratio (SNR). Contrary to previous reports, it is numerically and experimentally verified that the use of the Walsh functions in the high-spatial-resolution BOTDA allows the increase in SNR without deteriorating its spatial resolution expected. We demonstrate measurements with 1.5 dB improvement in SNR and with approximately 0.2 m spatial resolution.

AB - We have previously introduced phase modulation into pulsed pump of Brillouin Optical Time Domain Analysis (BOTDA) in order to obtain high spatial resolution. In this study, we propose to use Walsh functions in coding nonreturn-to-zero (NRZ) formatted pump pulses of the high-spatial-resolution BOTDA to increase signal-to-noise ratio (SNR). Contrary to previous reports, it is numerically and experimentally verified that the use of the Walsh functions in the high-spatial-resolution BOTDA allows the increase in SNR without deteriorating its spatial resolution expected. We demonstrate measurements with 1.5 dB improvement in SNR and with approximately 0.2 m spatial resolution.

KW - BOTD1 fiber sensor

KW - Brillouin frequency shift

KW - Stimulated Brillouin scattering (SBS)

KW - Walsh functions

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T3 - Proceedings of SPIE - The International Society for Optical Engineering

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The use of Walsh functions in modulating pump light of high-spatial- resolution BOTDA with NRZ pulses

Abstract

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Conference

Keywords

ASJC Scopus subject areas

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