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Distributed helical optical fiber das seismic acquisition system: a comparative test with geophones
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JunGuang NIE, DeBao XU, YuHui YAO, XiaoLiang HONG
Progress in Geophysics | 2026, 41(1) : 428 - 441
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Progress in Geophysics | 2026, 41(1): 428-441
Distributed helical optical fiber das seismic acquisition system: a comparative test with geophones
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JunGuang NIE, DeBao XU, YuHui YAO, XiaoLiang HONG
Affiliations
  • The 23rd Research Institute of China Electronics Technology Group Corporation, Shanghai 200437, China
Published: 2026-02-20 doi: 10.6038/pg2026II0539
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Distributed Acoustic Sensing (DAS) technology leverages the linear response of Rayleigh backscattered light in optical fibers to external acoustic fields, enabling distributed sensing and collection of vibrations. This technology has seen extensive application in seismic exploration. However, conventional straight optical fibers exhibit sensitivity primarily along the fiber axis, limiting their effectiveness in detecting vertically incident seismic waves, thus constraining their use in surface seismic surveys. To address this limitation, a Helically Wound Cable-Based Distributed Acoustic Sensing (HWC-DAS) technique has been proposed. In this approach, the fiber is helically wrapped around a deformable elastic medium, improving directional sensitivity and enhancing its ability to detect vertically incident reflections, significantly boosting sensitivity. Nevertheless, systematic comparisons between HWC-DAS and traditional seismic geophones remain sparse, and the differences in their sensitivity, Signal-to-Noise Ratio (SNR), and frequency-dependent responses are not yet clearly understood. To fill this knowledge gap, we conducted controlled laboratory experiments, including shaking table and vibration-sensing tests, to systematically compare the performance of HWC-DAS with conventional seismic geophones. Results from shaking table experiments indicate that HWC-DAS exhibits vibration response capabilities comparable to those of geophones across various frequency bands. Furthermore, vibration-sensing tests demonstrated that HWC-DAS achieves higher sensitivity and improved SNR compared to single-point geophones. Our study validates the effectiveness and feasibility of HWC-DAS for seismic exploration through laboratory experimentation, laying foundational groundwork for its practical deployment in industry.

Distributed acoustic sensing  /  Helical wound cable  /  Geophone  /  Vibration test
聂俊光, 徐德宝, 姚宇晖, 洪晓亮. 分布式螺旋光缆DAS地震采集系统与地震检波器对比试验. 地球物理学进展, 2026 , 41 (1) : 428 -441 . DOI: 10.6038/pg2026II0539
JunGuang NIE, DeBao XU, YuHui YAO, XiaoLiang HONG. Distributed helical optical fiber das seismic acquisition system: a comparative test with geophones[J]. Progress in Geophysics, 2026 , 41 (1) : 428 -441 . DOI: 10.6038/pg2026II0539
Year 2026 volume 41 Issue 1
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doi: 10.6038/pg2026II0539
  • Receive Date:2025-04-03
  • Online Date:2026-09-23
  • Published:2026-02-20
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  • Received:2025-04-03
  • Revised:2025-12-05
Affiliations
    The 23rd Research Institute of China Electronics Technology Group Corporation, Shanghai 200437, China
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表12种不同金属材料的力学参数
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Family
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Number of
genus
种数
Number of
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种数
Number of
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Percentage of total
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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