" Hybrid optical-wireless system for multi-gigabit networks at millimeter wave frequencies "
Wednesday, March 9th, 2016 at 10:00
This thesis focuses on the radio-over-fiber (RoF) communication systems at millimeter frequencies in the frequency range 57-66 GHz and optical generation of a signal at millimeter-wave frequency band. The technique used is based on mode-locked laser diodes. The diodes employed in this work are in quantum dots (or quantum dashes) technology. In this thesis, several studies were conducted: the first relates the ability of integration these types of lasers in the RoF communication systems under direct or external modulation. The second study was devoted to propagation effects. An original technique was implemented to reduce the sensitivity to chromatic dispersion in an optical fiber. A study of the reduction of phase noise mode-locked lasers based on the observation of the reaction effect and against the external optical injection was presented.
Key words: Radio over Fiber; Millimeter-wave; Mode-locked laser diodes; Chromatic dispersion; Optical injection; Phase noise.
Members of the jury : M. Raphaël CLERC, PR Institut d'Optique: President M. Pascal BESNARD, PR FOTON: Rapporteur M. Christelle AUPETIT-BERTHELEMOT,PR XLIM: Rapporteur Mme. Béatrice CABON, PR INP Grenoble: Supervisor M. Julien POETTE, MCF INP Grenoble: Co-supervisor
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Thesis prépared in the laboratory IMEP-LaHC supervised by Béatrice CABON, supervisor and Julien POËTTE, Co-supervisor .