The GeoINQUIRE project (GEO_INQUIRE, HORIZON-INFRA-2021-SERV-01, GA - 101058518) is a European initiative aimed at developing innovative research infrastructures for monitoring the subsurface, with applications in the fields of geophysics, natural hazards and environmental engineering. In this context, the Laboratori Nazionali del Sud – Istituto Nazionale di Fisica Nucleare are working on the application of Distributed Acoustic Sensing (DAS) technology, using a proprietary 28 km-long scientific deep-sea electro-optical cable as sensor to detect vibrations and mechanical changes along its path, to provide continuous, high-resolution monitoring of the soundscape. The effectiveness of DAS in such applications depends on the ability to accurately simulate the response of the system, since the mechanical coupling between optical fiber and soil, mediated by the cable jacket, varies significantly depending on the type of cable used and the characteristics of the soil (rocky, sandy, etc.). To address this issue, the development of a digital twin of the configuration has been initiated to model, simulate and optimize the behaviour of the optical fiber under different operating and environmental conditions and using cables different manufacture. The integration of experimental data into digital simulations enables the prediction and improvement of DAS performance, helping to optimize design solutions and promote the evolution of smart manufacturing.