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

doi:10.1109/ICP.2016.7510014

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

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

2 Citations (Scopus)

Abstract

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.

Original language	English
Title of host publication	2016 IEEE 6th International Conference on Photonics, ICP 2016
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781467381536
DOIs	https://doi.org/10.1109/ICP.2016.7510014
Publication status	Published - 2016 Jul 12
Event	6th IEEE International Conference on Photonics, ICP 2016 - Kuching, Sarawak, Malaysia Duration: 2016 Mar 14 → 2016 Mar 17

Other

Other	6th IEEE International Conference on Photonics, ICP 2016
Country	Malaysia
City	Kuching, Sarawak
Period	16/3/14 → 16/3/17

Keywords

BOTDA
distributed fiber sensor
stimulated Brillouin scattering

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Computer Networks and Communications

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Analysis on the employment of dual walsh codes in the phase-shift pulse BOTDA (PSP-BOTDA) fiber sensing technique. / Zan, M. S D; Bakar, A. A A; Horiguchi, Tsuneo.

2016 IEEE 6th International Conference on Photonics, ICP 2016. Institute of Electrical and Electronics Engineers Inc., 2016. 7510014.

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

Zan, MSD, Bakar, AAA & Horiguchi, T 2016, Analysis on the employment of dual walsh codes in the phase-shift pulse BOTDA (PSP-BOTDA) fiber sensing technique. in 2016 IEEE 6th International Conference on Photonics, ICP 2016., 7510014, Institute of Electrical and Electronics Engineers Inc., 6th IEEE International Conference on Photonics, ICP 2016, Kuching, Sarawak, Malaysia, 16/3/14. https://doi.org/10.1109/ICP.2016.7510014

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

abstract = "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.",

keywords = "BOTDA, distributed fiber sensor, stimulated Brillouin scattering",

author = "Zan, {M. S D} and Bakar, {A. A A} and Tsuneo Horiguchi",

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N2 - 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.

AB - 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.

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