Spectral behavior of long wavelength VCSELs

Alexandre Bacou; Angélique Rissons; Jean-Claude Mollier

doi:10.1117/12.763054

29 January 2008 Spectral behavior of long wavelength VCSELs

Alexandre Bacou, Angélique Rissons, Jean-Claude Mollier

Proceedings Volume 6908, Vertical-Cavity Surface-Emitting Lasers XII; 69080F (2008) https://doi.org/10.1117/12.763054
Event: Integrated Optoelectronic Devices 2008, 2008, San Jose, California, United States

Abstract

For a long time, only a small wavelength range of Vertical-Cavity Surface-Emitting Lasers (VCSEL) was available. The current evolution in process technology allows the fabrication of long wavelength VCSEL that is interesting for Telecom systems because they offer a higher integration level than the existing optical sources at lower costs since they are fabricated in arrays. We propose to focus our investigation on the behavior of singlemode 1.55μm VCSEL. We aim at precisely knowing their spectral properties under direct modulation. We present a study about the linewidth measurement and the linewidth enhancement factor, also called the Henry - or the alpha - factor. Many studies have been reported but only a few of them are really efficient. Two different set-ups are presented here to extract alpha factor. The first one uses an interferometer based on the heterodyne technique and the second uses the dispersive properties of an optical fiber. We compare both results and discuss about each set-up.

Citation Download Citation

Alexandre Bacou, Angélique Rissons, and Jean-Claude Mollier "Spectral behavior of long wavelength VCSELs", Proc. SPIE 6908, Vertical-Cavity Surface-Emitting Lasers XII, 69080F (29 January 2008); https://doi.org/10.1117/12.763054

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