A Mirror-Based Jamming Scheme Against Eavesdropping in Underwater Optical Communication

Providing secure optical wireless communication is a crucial challenge also in underwater scenarios, even though it has not been extensively investigated in the literature yet. In this paper, we propose a novel physical layer optical jamming scheme for underwater communications that, by leveraging signal reflection by mirror surfaces integrated with the reference transmitter (Alice), allows a reliable signal detection for a legitimate node while denying the transmission interception to potential eavesdroppers. Preliminary results demonstrate the proposed solution to effectively deny a reliable signal detection for an eavesdropper, while preserving the legitimate link integrity.