Flex-Grid 6.25GHz full-duplex frequency slots are proposed for Metro/Access & Data-Center Networks allocating: 1Gbps Nyquist-DPSK over MZM for OLT/DC-ONU downlinks and OLT/DC up-downlinks; 1Gbps NRZ-DPSK over directly modulated DFB for ONU-OLT/DC uplinks; with 50km single fiber transmission.
Altabas, J., Izquierdo, D., Sotelo, F., Garcés, I., Lazaro, J.A., Lerín, A., Spadaro, S., Junyent, G. Experimental demonstration of Flex-Grid udWDM with 6.25GHz full-duplex frequency slots for metro/access & data centers. A: International Conference on Photonics in Switching. "2015 International Conference on Photonics in Switching (PS 2015): Florence, Italy: 22-25 September 2015". Florence: Institute of Electrical and Electronics Engineers (IEEE), 2015, p. 103-105.