Genetic-optimised aperiodic code for distributed optical fibre sensors
Distributed optical fibre sensors deliver a map of a physical quantity along an optical fibre, providing a unique solution for health monitoring of targeted structures. Considerable developments over recent years have pushed conventional distributed sensors towards their ultimate performance, while any significant improvement demands a substantial hardware overhead. Here, a technique is proposed, encoding the interrogating light signal by a single-sequence aperiodic code and spatially resolving the fibre information through a fast post-processing. The code sequence is once forever computed by a specifically developed genetic algorithm, enabling a performance enhancement using an unmodified conventional configuration for the sensor. The proposed approach is experimentally demonstrated in Brillouin and Raman based sensors, both outperforming the state-of-the-art. This methodological breakthrough can be readily implemented in existing instruments by only modifying the software, offering a simple and cost-effective upgrade towards higher performance for distributed fibre sensing.
Nat Commun 11, 5774 (2020) s41467-020-19201-1 Published version.pdf
Publisher's version
openaccess
CC BY
3.93 MB
Adobe PDF
9ba4eff5f6823235988a9535193399b0
Supplementary Information 41467_2020_19201_MOESM1_ESM.pdf
Publisher's version
openaccess
CC BY
3.44 MB
Adobe PDF
6a907b702c82e966d41f8e606a7a7bed