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    M-OTDR sensing system based on 3D encoded microstructures by Sun, Qizhen, Ai, Fan, Liu, Deming, Cheng, Jianwei, Luo, Hongbo, Peng, Kuan, Luo, Yiyang, Yan, Zhijun, Shum, Perry Ping

    Published 2017
    “…In this work, a quasi-distributed sensing scheme named as microstructured OTDR (M-OTDR) by introducing ultra-weak microstructures along the fiber is proposed. Owing to its relative higher reflectivity compared with the backscattered coefficient in fiber and three dimensional (3D) i.e. wavelength/frequency/time encoded property, the M-OTDR system exhibits the superiorities of high signal to noise ratio (SNR), high spatial resolution of millimeter level and high multiplexing capacity up to several ten thousands theoretically. …”
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    Journal Article
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