2024
DOI: 10.1364/ol.538965
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Quantum weak measurement enhanced distributed acoustic sensing

Qingxin Deng,
Hongjing Li,
Qi Song
et al.

Abstract: An enhanced distributed acoustic sensing (DAS) is proposed based on an extended Mach–Zehnder interferometer utilizing quantum weak measurement. The acoustic signals are encoded as the relative phase of the polarized light in several channels by fibers between optical fiber Bragg gratings (FBGs). With appropriate preselection and postselection, the acoustic signal can be extracted by performing the Fourier transform on the contrast ratio of the detected light intensity. Theoretical analysis shows that the schem… Show more

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