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

Mohd Saiful Dzulkefly Zan, Tatsuya Tsumuraya, Tsuneo Horiguchi

Research output: Chapter in Book/Report/Conference proceedingConference 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 languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume8421
DOIs
Publication statusPublished - 2012
Externally publishedYes
Event22nd International Conference on Optical Fiber Sensors - Beijing, China
Duration: 15 Oct 201219 Oct 2012

Other

Other22nd International Conference on Optical Fiber Sensors
CountryChina
CityBeijing
Period15/10/1219/10/12

Fingerprint

Walsh function
Walsh Functions
Time Domain Analysis
time domain analysis
Time domain analysis
Spatial Resolution
Pump
Signal to noise ratio
High Resolution
spatial resolution
Pumps
pumps
high resolution
Zero
pulses
signal to noise ratios
Phase modulation
Phase Modulation
phase modulation
coding

Keywords

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

ASJC Scopus subject areas

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

Cite this

Zan, M. S. D., Tsumuraya, T., & Horiguchi, T. (2012). The use of Walsh functions in modulating pump light of high-spatial- resolution BOTDA with NRZ pulses. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 8421). [84219J] https://doi.org/10.1117/12.968584

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

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8421 2012. 84219J.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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