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Self-correction-iterative method enabled 15,000μεultra-large dynamic range distributed strain sensing system 认领 引用
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作者 TENGHUA AI CUNZHENG FAN +4 位作者 YUEJUAN LV WEILIANG ZHAO HAO LI ZHIJUN YAN QIZHEN SUN 《Photonics Research》 SCIE EI CAS CSCD 2026年第6期2553-2563,共11页
Distributed optical fiber strain sensors based on optical frequency domain reflectometry(OFDR)are increasingly utilized in applications including medical diagnostics and geological exploration,where both high spatial ... Distributed optical fiber strain sensors based on optical frequency domain reflectometry(OFDR)are increasingly utilized in applications including medical diagnostics and geological exploration,where both high spatial resolution and a large strain measurement range are required.However,the performance of OFDR is limited by positional and spectral mismatches,resulting in an inherent trade-off between the dynamic range and spatial resolution.Here,a distributed strain sensing system with an ultra-large dynamic range is proposed.By introducing the self-correction-iterative algorithm for high-precision positional compensation,the system achieves high spatial resolution and an ultra-large strain measurement range simultaneously.In addition,an active contour model is employed to nondestructively extract the strain profile from the position-corrected demodulation image.Experimental results show that the proposed scheme achieves the up to 15,000μεstrain demodulation with a high spatial resolution of 0.8 mm and a relative error of only 0.16%,offering a groundbreaking solution for distributed strain sensing applications that require a large dynamic range and high resolution. 展开更多
关键词 distributed strain sensing system optical frequency domain reflectometry geological explorationwhere optical frequency domain reflectometry ofdr distributed strain sensing self correction iterative method medical diagnostics distributed optical fiber strain sensors
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