Integrated Sensing and Communication in a Fiber-Wireless System With Time-Phase Synthesis Dimension Waveform

The convergence of integrated sensing and communication (ISAC) across optical and wireless domains is a cornerstone for next-generation networks, yet it is hindered by the fundamental incompatibility between fiber and wireless systems. Here, we introduce a unified fiber-wireless ISAC system driven by a single microwave photonic platform. By leveraging a tailored time-phase synthesis dimension waveform, our architecture simultaneously delivers high-speed data transmission, precise wireless ranging, and accurate fiber diagnostics. The system achieves an equivalent common public radio interface (CPRI) data rate of 47.92 Gbit/s, a wireless ranging resolution of 0.29 m, and a fiber delay measurement precision of 56.6 ps capable of breakpoint localization. Furthermore, the synthesized waveform suppresses stimulated Brillouin scattering by 11 dB in high-power analog fronthaul, paving the way for compact and energy-efficient base stations. This work provides scalable and power-efficient framework that bridges the long-standing gap between optical and wireless realms, setting the stage for future green and intelligent mobile networks.