Resumen: 1Gbps full-duplex optical links for 6.25GHz ultra dense WDM frequency slots are demonstrated and optimized for cost-effective metro- access networks. The OLT-ONU downlinks are based on 1Gbps Nyquist- DPSK using MZM and single-detector heterodyne reception obtaining a sensitivity of -52dBm. The ONU-OLT uplinks are based on 1Gbps NRZ- DPSK by directly phase modulated DFB and also single-detector heterodyne reception obtaining same sensitivity of -52dBm. The power budget of full-duplex link is 43dB. These proposed links can provide service to 16 (32) users at each 100 (200) GHz WDM channel. Idioma: Inglés DOI: 10.1364/OE.24.000555 Año: 2016 Publicado en: Optics Express 24 (2016), 555-565 ISSN: 1094-4087 Factor impacto JCR: 3.307 (2016) Categ. JCR: OPTICS rank: 16 / 92 = 0.174 (2016) - Q1 - T1 Factor impacto SCIMAGO: 1.532 - Atomic and Molecular Physics, and Optics (Q1)