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0.01 Hz Low-frequency Acoustic Wave Detection over 92 km Sensing Fiber Based on Chirped-Pulse φ-OTDR

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Abstract

0.01 Hz low-frequency acoustic wave detection over 92 km sensing fiber based on chirped-pulse φ-OTDR is demonstrated with distributed Raman amplification and 32 averages. The strain sensitivity is 8.5 nε/Hz1/2.

© 2023 The Author(s)

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