Toward integrated security and monitoring: perception-embedded modulation for DCIs

We propose an integrated transmission scheme for data center interconnects (DCIs) that jointly enables security and monitoring at the physical layer. A perception-embedded modulation (PEM) method is designed to embed device identifiers into modulated data, while channel anomalies are sensed based on the statistical characteristics of the constellation same-set ratio. To protect both the transmitted data and the embedded identifiers, chaotic noise injection is introduced, and reliable transmission of the masked signal is ensured through delta-sigma modulation (DSM). The proposed chaotic PEM-DSM encrypted signal at 64 GBaud is validated over a 240 km optical fiber link. The results demonstrate that the scheme achieves secure data transmission, accurately identifies unauthorized devices, and enables optical performance monitoring with a resolution of 1 dB.