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Study of converged 60 GHz radio over fiber with WDM-PON access networks

Abstract : Recently, convergence of 60 GHz radio over fiber (RoF) technique with wavelength division multiplexing (WDM) passive optical networks (PON) has raised great interests because it provides the possibility for simultaneous broadband 60 GHz signal generation and multi-gigabit per second wireline transmission. The objective of the thesis is to study the solutions for converged 60 GHz RoF and WDM-PON technique.In this thesis, we have made the following achievements for RoF technology and the integration of RoF technology with WDM-PON access networks:A RoF system using WDM DEMUX which is supposed to be compliant with WDM-PON access networks is proposed in this thesis.Phase noise including optical phase to intensity noise conversion contribution due to the delayed coherent detection induced by the different optical lengths between the two optical channels and the phase noise contribution due to the electrical generators has been theoretically studied.PSD of the optical mmW is theoretically analyzed and experimentally demonstrated, which gives a solution to compensate different optical delay │τd│EVM as function of │τd│/τcOP is theoretically derived and experimentally proved, which gives a design rule for optical heterodyning using WDM DEMUXThe optical heterodyning technique using WDM DEMUX for mmW generation respecting ECMA 387 standard is validated by the experiment.We proposed a simple combination of RoF with WDM-PON supporting mmW generation respecting ECMA 387 standard and multi-gigabit per second baseband transmission. Simultaneous transmission of 1588 Mbps BPSK 60 GHz signal and 10 Gbps baseband signal is experimentally proved.A novel WDM-RoF-PON access networks with multi-band modulation technique is proposed in order to lower the cost of infrastructure.We propose a novel parallel phase modulation technique with a single MZM. This technique can offer several significant advantages compared to any other multi-band modulation technique.No impact from baseband modulation to mmW generation.Limited impact from RF modulation to baseband transmission due to the non-linearity of the phase modulation.BER of baseband signal with RF impact is theoretically studied and experimentally demonstrated, which gives a design rule for parallel phase modulation technique with a single MZMA low-cost bidirectional RoF transmission using optoelectronic mixing and optical heterodyning technique is proposed and experimentally demonstrated. It has been proved that:397 Mbps and 794 Mbps BPSK 60 GHz uplink signal is down-converted to IF band respecting the ECMA 387 standard by using the optoelectronic mixing technique.No EVM penalty is paid to the non-linearity biased PD for downlink transmission by optical heterodyning technique. 6 dB power penalty need to be paid for the non-linear biased PD, which can be compensated by using high gain LNA after the PD.
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Tong Shao. Study of converged 60 GHz radio over fiber with WDM-PON access networks. Autre. Université de Grenoble, 2012. Français. ⟨NNT : 2012GRENT033⟩. ⟨tel-00770149⟩

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