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Simulation of microwave optical links and proof of noise figure lower than electrical losses

Published online by Cambridge University Press:  09 December 2010

Anne-Laure Billabert ,
Mourad Chtioui ,
Christian Rumelhard ,
Catherine Algani ,
Mehdi Alouini ,
Quentin Lévesque ,
Christophe Feuillet ,
Alexandre Marceaux  and
Thomas Merlet
Anne-Laure Billabert*
Affiliation:
ESYCOM-CNAM, 292 rue Saint-Martin, 75141 Paris Cedex 3, France.
Mourad Chtioui
Affiliation:
Thales Air Systems, Hameau de Roussigny, 91470 Limours, France.
Christian Rumelhard
Affiliation:
ESYCOM-CNAM, 292 rue Saint-Martin, 75141 Paris Cedex 3, France.
Catherine Algani
Affiliation:
ESYCOM-CNAM, 292 rue Saint-Martin, 75141 Paris Cedex 3, France.
Mehdi Alouini
Affiliation:
Institut de Physique de Rennes, UMR 6251, CNRS-Université de Rennes 1, 35042 Rennes Cedex, France.
Quentin Lévesque
Affiliation:
Thales Air Systems, Hameau de Roussigny, 91470 Limours, France.
Christophe Feuillet
Affiliation:
Thales Air Systems, Hameau de Roussigny, 91470 Limours, France.
Alexandre Marceaux
Affiliation:
Thales Air Systems, Hameau de Roussigny, 91470 Limours, France.
Thomas Merlet
Affiliation:
Thales Air Systems, Hameau de Roussigny, 91470 Limours, France.
*
Corresponding author: A.-L. Billabert Email: anne-laure.billabert@cnam.fr
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Abstract

The operation of a microwave photonic link is thoroughly investigated both theoretically and experimentally. To this aim, we have developed a simulation tool based on an accurate physical model embedded in a radio frequency (RF) chain simulator. The theoretical predictions are tested on an intensity modulation-direct detection (IMDD) link we have specifically developed to this purpose. Our simulation tool takes into account both optical and electrical characteristics of the link components including the laser dynamics and impedance matching networks. It thus enables an accurate understanding of the different physical and electrical phenomena governing the link's performances even under unusual operation conditions. Specifically, we were able to isolate an unusual behavior and to confirm it experimentally. It is thereby clear that the noise figure of a microwave optical link can be lower than the electrical losses, such as a mismatched output passive electrical network. This state is reached when the optical losses are high enough and when the link's output impedance is mismatched, too.

Keywords

Microwave photonicsModelingSimulation and characterizations of devices and circuitsMicrowave noise power measurements
Type
Original Article
Information
International Journal of Microwave and Wireless Technologies , Volume 2 , Issue 6 , December 2010 , pp. 497 - 503
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2010

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References

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