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A new flexible ONU design for UDWDM-PON with coherent transceivers and smart activation process
Segarra Mullerat, Josep; Sales Zaragoza, Vicente; Prat Gomà, Josep Joan; Pous, R.
Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. GCO - Grup de Comunicacions Òptiques
We present a novel ONU architecture for coherent UDWDM-PON with randomly distributed ONU wavelengths. The ONU is built with one or two lasers exhibiting simple limited thermal tunability in a specific optical band, where the wavelengths are managed in a Statistical UDWDM approach. If only one laser is present at the ONU, it serves as both local oscillator for coherent receiver and transmitter in a Half-Duplex transmission mode. When two lasers are equipped, they can work in Full-Duplex transmission mode as receiver or transmitter indistinctly and back-up protection is provided in case of laser fail. Finally, a simple activation process based on Half-Duplex transmission for both lasers and a wavelength monitoring during operation is also proposed.
Peer Reviewed
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica::Fibra òptica
Optical communications
Passive optical networks
Coherent receivers
Full-Duplex (FD)
Half-Duplex (HD)
Optical Network Unit (ONU)
Ultra Dense Wavelength Division Multiplexing-Passive Optical Network (UDWDM-PON)
Amplificadors òptics
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