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Authors: Ziwen Deng ; Ruobing Xu ; Yuyao Wang ; Jialin Jiang and Zinan Wang

Affiliation: Key Lab of Optical Fiber Sensing & Communications, University of Electronic Science and Technology of China, Chengdu, China

Keyword(s): Optical Fiber Sensing, Acoustic Sensing, Orthogonal Codes, Sensing Bandwidth, Real-time.

Abstract: In recent years, quasi-distributed acoustic sensing (QDAS) has attracted lots of attentions and shows great advantages in various fields such as structure health monitoring, intrusion sensing and so on. Sensing bandwidth is one of the essential indexes in QDAS, and there is a trade-off between sensing bandwidth and sensing distance. To break the limitation, the multiple-input multiple-output (MIMO) technology and ten orthogonal codes in the same frequency (OCSF) are utilized as an innovative technology to multiplex the sensing channel in a real-time long-distance QDAS system. In this paper, the sensing bandwidth of QDAS is enlarged to 5 kHz on 99.4 km sensing fiber, which is ten times of that in the conventional QDAS without channel multiplexing; a 4.9 kHz sinusoidal signal is retrieved in real time successfully, with 10 m spatial resolution and 43.8 pɛ/√Hz noise level.

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Paper citation in several formats:
Deng, Z.; Xu, R.; Wang, Y.; Jiang, J. and Wang, Z. (2022). Sensing Bandwidth Enlargement with Ten Orthogonal Codes in Quasi-distributed Acoustic Sensing System. In Proceedings of the 10th International Conference on Photonics, Optics and Laser Technology - PHOTOPTICS; ISBN 978-989-758-554-8; ISSN 2184-4364, SciTePress, pages 152-157. DOI: 10.5220/0010972100003121

@conference{photoptics22,
author={Ziwen Deng. and Ruobing Xu. and Yuyao Wang. and Jialin Jiang. and Zinan Wang.},
title={Sensing Bandwidth Enlargement with Ten Orthogonal Codes in Quasi-distributed Acoustic Sensing System},
booktitle={Proceedings of the 10th International Conference on Photonics, Optics and Laser Technology - PHOTOPTICS},
year={2022},
pages={152-157},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0010972100003121},
isbn={978-989-758-554-8},
issn={2184-4364},
}

TY - CONF

JO - Proceedings of the 10th International Conference on Photonics, Optics and Laser Technology - PHOTOPTICS
TI - Sensing Bandwidth Enlargement with Ten Orthogonal Codes in Quasi-distributed Acoustic Sensing System
SN - 978-989-758-554-8
IS - 2184-4364
AU - Deng, Z.
AU - Xu, R.
AU - Wang, Y.
AU - Jiang, J.
AU - Wang, Z.
PY - 2022
SP - 152
EP - 157
DO - 10.5220/0010972100003121
PB - SciTePress

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