Analysis on the employment of dual walsh codes in the phase-shift pulse BOTDA (PSP-BOTDA) fiber sensing technique

M. S D Zan, A. A A Bakar, Tsuneo Horiguchi

研究成果: Conference contribution

2 引用 (Scopus)

抜粋

We propose a technique to modulate the pump light of phase-shift pulse Brillouin optical time domain analysis (PSP-BOTDA) with Walsh code in a nested configuration. We call it dual Walsh codes PSP-BOTDA. In this technique, two Walsh codes are each assigned to return-to-zero (RZ) and non-return-to-zero (NRZ) pulses. Simulation and experiment results have shown that the assignment of Walsh to the non-return-to-zero (NRZ) pulses even for code duration of longer than the time constant of the acoustic wave still attains the theoretical spatial resolution of the Brillouin signal, in contrast to that of previously proposed dual Golay codes PSP-BOTDA. In terms of the optical signal-to-noise ratio (SNR), we obtained a maximum of improvement of 5.4 dB, compared to the conventional technique.

元の言語English
ホスト出版物のタイトル2016 IEEE 6th International Conference on Photonics, ICP 2016
出版者Institute of Electrical and Electronics Engineers Inc.
ISBN(電子版)9781467381536
DOI
出版物ステータスPublished - 2016 7 12
イベント6th IEEE International Conference on Photonics, ICP 2016 - Kuching, Sarawak, Malaysia
継続期間: 2016 3 142016 3 17

Other

Other6th IEEE International Conference on Photonics, ICP 2016
Malaysia
Kuching, Sarawak
期間16/3/1416/3/17

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Computer Networks and Communications

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    Zan, M. S. D., Bakar, A. A. A., & Horiguchi, T. (2016). Analysis on the employment of dual walsh codes in the phase-shift pulse BOTDA (PSP-BOTDA) fiber sensing technique. : 2016 IEEE 6th International Conference on Photonics, ICP 2016 [7510014] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICP.2016.7510014