P
Philippe Gallion
Researcher at Télécom ParisTech
Publications - 199
Citations - 2699
Philippe Gallion is an academic researcher from Télécom ParisTech. The author has contributed to research in topics: Semiconductor laser theory & Laser. The author has an hindex of 26, co-authored 199 publications receiving 2575 citations. Previous affiliations of Philippe Gallion include Alexander Technological Educational Institute of Thessaloniki & Centre national de la recherche scientifique.
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Theory and Measurement Techniques for the Noise Figure of Optical Amplifiers
TL;DR: In this paper, the theoretical basis for the noise figure of optical amplifiers is reviewed, and a consistent approach to determining the noise figures of cascaded components is developed, based on the input and output signal-to-noise ratios.
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Locking bandwidth and relaxation oscillations of an injection-locked semiconductor laser
TL;DR: Theoretical and experimental results from an injection-locked semiconductor laser are reported in this article, where the authors show that the usefulness of the technique in terms of modulation is estimated based on the behaviour, amplitude, and frequency of the relaxation oscillations which are the main limiting factor.
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Quantum phase noise and field correlation in single frequency semiconductor laser systems
Philippe Gallion,G. Debarge +1 more
TL;DR: In this article, the influence of quantum phase fluctuations which affect single frequency semiconductor lasers in various coherent detection systems is discussed in terms of photocurrent autocorrelation and spectral density functions.
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Contribution of spontaneous emission to the linewidth of an injection-locked semiconductor laser
TL;DR: In this article, the spontaneous emission inside an injection-locked semiconductor laser does not alter the lasing field and the linewidth is only governed by the injected-field phase noise and may no longer follow the Schawlow Townes dependence on emitted optical power.
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45 GHz self-pulsation with narrow linewidth in quantum dot Fabry-Perot semiconductor lasers at 1.5 [micro sign]m
J. Renaudier,Romain Brenot,Beatrice Dagens,Francois Lelarge,B. Rousseau,Francis Poingt,O. Legouezigou,Frederic Pommereau,Alain Accard,Philippe Gallion,G-H Duan +10 more
TL;DR: In this article, self-pulsation at 45 GHz repetition frequency has been demonstrated in 1.5µm single-section quantum dot Fabry-Perot semiconductor lasers without saturable absorber.