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Dual Electroabsorption Modulated Laser: étude et caractérisation d'une nouvelle source optique laser-modulateur intégrés pour les transmissions numériques haut-débit et les applications Radio-sur-Fibre.

Abstract : This thesis is related to the physical layer of a terrestrial optical transmission system for a metropolitan network. Our first investigation deals with an optical device, the Electroabsorption Modulated Laser (EML) which is used to constitute the optical source of medium span optical link thanks to its low price, low consumption and small foot print. The work is done in collaboration with an industrial optoelectronics maker, the GIE Alcatel-Thales III-V Lab, We propose an original technique of pre-chirping obtained by modulating the laser in addition to the electro-absorption modulator (MEA). The purpose of this thesis is to develop a novel modulation scheme of the EML in order to overcome the limits set by the chromatic dispersion and nonlinear effects in the transmission fibre. The principle has been demonstrated in the literature with a separate laser and a modulator but never with an integrated device. The technique is based on a pre-compensation of the chromatic dispersion by applying a modulation to the laser of the EML and then the signal is modulated by the MEA. Within the scope of this research work, we have demonstrated experimentally the first increment of the usual distances from around 80 km upto 160 km with a monolithic component and no dispersion compensating element. Radio-over-Fiber application for optical access networks has also been explored, it is also based on an analogue dual modulation, this time tuned so as supress one modulation sideband. This modulation format can carry very high-speed IQ signals over 100 km excluding the periodic degradation of the data signal induced by chromatic dispersion obtained with double-sideband modulation.
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https://pastel.archives-ouvertes.fr/pastel-00579997
Contributor : Juan Mauricio Petit Ferrufino <>
Submitted on : Friday, March 25, 2011 - 4:09:53 PM
Last modification on : Friday, October 23, 2020 - 4:37:49 PM
Long-term archiving on: : Sunday, June 26, 2011 - 2:33:07 AM

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  • HAL Id : pastel-00579997, version 1

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Juan Mauricio Petit Ferrufino. Dual Electroabsorption Modulated Laser: étude et caractérisation d'une nouvelle source optique laser-modulateur intégrés pour les transmissions numériques haut-débit et les applications Radio-sur-Fibre.. Optique / photonique. Télécom ParisTech, 2010. Français. ⟨pastel-00579997⟩

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