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Augmentation de la capacité des interfaces PONs TDMA au-delà de 10Gbit/s dans les réseaux d’accès en fibres optiques

Abstract : The optical access network is booming, especially with the massive deployment of FTTH connecting clients’ home and antenna sites for the incoming 5G. The fiber’s popularization and the transformation of data consumption drive the bitrate growth. Many solutions are proposed. In this thesis, the passive optical network’s (PON) bitrate growth will be studied along three axes :• PAM4 to reuse 10GHz optoelectronical components to reach 25Gbit/s. This four levels modulation format is more bandwidth efficient than NRZ and it allows to transmit two bitratesas the same time on a PON tree. Within the first chapter, optical amplification is studied to enhance the optical budget for a PAM4 transmission. Last part of the chapter presents asimulation based on the real-time experiment to simulate PAM8.• Three vendors’ solutions for the throughput growth. The first prototype is based on theNG-PON2 standard and its PtP WDM option. The second prototype demonstrates how to transmit 25Gbit/s with duobinary and vestigial side band modulation. The last prototype illustrates a youthful solution for 5G fronthauling with a PtP WDM system transmitting at 25Gbit/s.• Equalization in PON’s context. Signal processing and equalization are common in optical transport links. With the throughput rising, equalization in access network seems indispensable. In the chapter, an implementation of equalization is proposed congruently with point-to-multipoints PON application and compliantly with access network’s cost needs and topology.
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Sylvain Barthomeuf. Augmentation de la capacité des interfaces PONs TDMA au-delà de 10Gbit/s dans les réseaux d’accès en fibres optiques. Optique / photonique. Université Paris Saclay (COmUE), 2019. Français. ⟨NNT : 2019SACLT052⟩. ⟨tel-02528354⟩

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