Heterogeneous-frequency-dual-pulse chain and weak FBG array for quasi-distributed acoustic sensing with improved response bandwidth.
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DOI: 10.1364/ao.432727
Abstract: By continuously injecting four groups of heterogeneous frequency dual pulses into the sensing fiber with weak fiber Bragg gratings (WFBGs), a quasi-distributed acoustic sensing method based on frequency-division multiplexing is proposed. Each group of pulses… read more here.
Keywords: frequency; frequency dual; heterogeneous frequency; quasi distributed ... See more keywords