Hardware-efficient integration of communication and vibration sensing in DSCM system using commercial 100 kHz ECL

We propose a hardware-efficient, low-cost integrated communication and vibration sensing method that relies solely on existing commercial coherent optical communication systems. The scheme utilizes dynamic frequency offset estimation to adapt to commercial 100kHz ECL, while employing sliding averaging and nearest-neighbor interpolation to greatly reduce algorithm complexity, making it conducive for integration into real-time platform. We demonstrate our scheme in a dual-polarization DSCM coherent optical communication system and discuss the performance in terms of communication and sensing capabilities under different conditions.