Fig. 1. 200 Gbit/s coherent PON MAC interface based on 50 GBaud DP-QPSK modulation

Fig. 2. 200 Gbit/s coherent PON MAC interface based on SCM/OFDM modulation

Fig. 3. Block diagram of Bi-Di optical module architecture for coherent PON

Fig. 4. Schematic block diagram of burst transmission architecture for coherent PON optical modules

Fig. 5. Wavelength management strategy for coherent PON systems based on a registered handshake mechanism

Fig. 6. Wavelength management strategy for coherent PON systems based on the management channels