Differential Cross Spectrum Technique for Improving the Spatial Resolution of BOTDR Sensor

Mohd Saiful Dzulkefly Zan; Yuki Masui; Tsuneo Horiguchi

doi:10.1109/ICP.2018.8533208

Differential Cross Spectrum Technique for Improving the Spatial Resolution of BOTDR Sensor

Mohd Saiful Dzulkefly Zan, Yuki Masui, Tsuneo Horiguchi

研究成果: Conference contribution

6 被引用数 (Scopus)

抄録

We propose a technique in BOTDR fiber sensor to generate a pair of pulsed probes via intensity modulation scheme for measuring distributed strain at high spatial resolution. The first probe consists of a long-and short duration of pulses separated by a short interval. The second probe only has the long pulse of the first probe. Introducing FFT in correlating the backscattered signals sampled by wide and narrow window functions for each probe gives narrow Brillouin spectrum width. The subtraction of the correlated signals obtained by the two probes results in high spatial resolution measurement. The intensity modulation makes it easier to generate the pair of pulsed probes having the same waveform of the long pulse and to obtain the results according to the measurement principle. We have achieved 0.2 m spatial resolution and 3.2 MHz Brillouin frequency accuracy in measuring a 350 m fiber.

本文言語	English
ホスト出版物のタイトル	2018 IEEE 7th International Conference on Photonics, ICP 2018
出版社	Institute of Electrical and Electronics Engineers Inc.
ISBN（電子版）	9781538611876
DOI	https://doi.org/10.1109/ICP.2018.8533208
出版ステータス	Published - 2018 11 12
イベント	7th IEEE International Conference on Photonics, ICP 2018 - Langkawi, Kedah, Malaysia 継続期間: 2018 4 9 → 2018 4 11

Other

Other	7th IEEE International Conference on Photonics, ICP 2018
Country	Malaysia
City	Langkawi, Kedah
Period	18/4/9 → 18/4/11

ASJC Scopus subject areas

Computer Networks and Communications
Signal Processing
Electrical and Electronic Engineering
Atomic and Molecular Physics, and Optics

文献へのアクセス

10.1109/ICP.2018.8533208

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引用スタイル

Zan, MSD, Masui, Y & Horiguchi, T 2018, Differential Cross Spectrum Technique for Improving the Spatial Resolution of BOTDR Sensor. in 2018 IEEE 7th International Conference on Photonics, ICP 2018., 8533208, Institute of Electrical and Electronics Engineers Inc., 7th IEEE International Conference on Photonics, ICP 2018, Langkawi, Kedah, Malaysia, 18/4/9. https://doi.org/10.1109/ICP.2018.8533208

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