Improvement of signal-to-noise-ratio by combining Walsh and Golay codes in modulating the pump light of phase-shift pulse BOTDA fiber sensor

Mohd Saiful Dzulkefly Zan, Ahmad Ashrif A. Bakar, Tsuneo Horiguchi

研究成果: Conference contribution

5 被引用数 (Scopus)

抄録

We report in this paper the simultaneous employment of two different coding techniques called Walsh code and Golay code for modulating the pump light of Brillouin optical time domain analysis (BOTDA) fiber optic sensor. In this technique, the elements of Walsh code are nested within each element of Golay code and vice versa. The technique also modulates the pump with the non-return-to-zero (NRZ) and return-to-zero (RZ) formats for the inner and outer codes, respectively. Experimental findings have revealed that the proposed coding technique contributed to higher signal-to-noise improvement ratio (SNIR), compared to that of using only one kind of code; we obtained the maximum optical SNIR of about 6 dB. We have also successfully demonstrated 10 cm of high spatial resolution measurement with the use of 1 ns of coded pulse duration.

本文言語English
ホスト出版物のタイトル2015 9th International Conference on Sensing Technology, ICST 2015
出版社IEEE Computer Society
ページ269-273
ページ数5
ISBN(電子版)9781479963140
DOI
出版ステータスPublished - 2016 3 21
イベント9th International Conference on Sensing Technology, ICST 2015 - Auckland, New Zealand
継続期間: 2015 12 82015 12 11

出版物シリーズ

名前Proceedings of the International Conference on Sensing Technology, ICST
2016-March
ISSN(印刷版)2156-8065
ISSN(電子版)2156-8073

Other

Other9th International Conference on Sensing Technology, ICST 2015
国/地域New Zealand
CityAuckland
Period15/12/815/12/11

ASJC Scopus subject areas

  • 人工知能
  • コンピュータ サイエンスの応用
  • 信号処理
  • 電子工学および電気工学

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