Multiple - PON access network architecture

A novel access network architecture based on a coarse wavelength division multiplexing array waveguide grating router for switching up to 32 optical network units per passive optical network over a single coarse wavelength band is described. The cost effective network architecture is simulated, using a physical-layer model of two passive optical networks, each comprising 16 ONUs, employing 12nm-wide passband windows in the array waveguide grating. In this manner low error rate transmission 2.5 Gbit/s for distances up to 20km is demonstrated.