Time-Expansion in Distributed Optical Fibre Sensing

We review our work on a novel dual-comb technique to achieve a customized temporal expansion of the time-domain trace in a phase-sensitive reflectometer, that allows dynamic interrogation of strain/temperature in optical fibres with high spatial resolution (in the cm range) using only low-bandwidth photodetection (similar to MHz). (C) 2022 The Author(s)

Automated summary

This study presents a novel dual-comb technique that achieves a customized temporal expansion of the time-domain trace in a phase-sensitive reflectometer. It enables the dynamic interrogation of strain/temperature in optical fibers with high spatial resolution using only low-bandwidth photodetection.