Distributed Acoustic Sensing over XGS-PON by using “coded” Enhanced Scattering Fibre

We demonstrate distributed-acoustic-sensing (DAS) over 10G passive-optical-network (XGS-PON) system. The vibrations from 3 distributed fibres are identified by “coded” enhanced-scatter-fibres (ESF) and fibre delay-lines. The sensing performance and crosstalk between DAS and XGS-PON signals within co-existing DAS over XGS-PON system are investigated.