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Range-scalable distributed acoustic sensing with EDFA repeaters demonstrated over 2227 km
We demonstrate a new, to the best of our knowledge, range-scalable repeatered distributed acoustic sensing (DAS) solution sharing technology with existing long-haul subsea telecom networks capable of low noise and high spatial and temporal resolution. Single ended DAS interrogation through a 2227 km...
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Published in: | Optics letters 2025-01, Vol.50 (1), p.25 |
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Main Authors: | , , , , , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites |
Online Access: | Get full text |
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Summary: | We demonstrate a new, to the best of our knowledge, range-scalable repeatered distributed acoustic sensing (DAS) solution sharing technology with existing long-haul subsea telecom networks capable of low noise and high spatial and temporal resolution. Single ended DAS interrogation through a 2227 km line comprising 39 repeatered fiber spans is demonstrated with a 10 m spatial resolution, a 1.78 kHz sampling rate, and a strain resolution of 35 pε/√Hz for the outermost span. The technique allows for many DAS channels to be wavelength multiplexed on a single fiber pair. Addressing of spans with add/drop (A/D) multiplexers (MUX) is demonstrated with |
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ISSN: | 0146-9592 1539-4794 1539-4794 |
DOI: | 10.1364/OL.542267 |