Demonstration of Auxiliary Management and Control Channel Signal Transmission for FDM Coherent Passive Optical Network

For the first time, we proposed and demonstrated auxiliary management and control channel (AMCC) in frequency division multiplexing coherent passive optical network (FDM-PON) based on digital subcarriers (DCM) to transmit control information and reduce the latency of signal transmission. We propose an extraction algorithm to detect AMCC signals. A 4-band FDM QPSK coherent PON system of a total 100-Gbps data rate with a 24-Mbps non-return-to-zero (NRZ) signal was demonstrated and the system performance at different modulation index (MI) was analyzed.