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Proceedings Article

Excitation of a two-mode limit cycle dynamics on the route to polarization switching in a VCSEL subject orthogonal to optical injection

[+] Author Affiliations
I. Gatare

Supélec, LMOPS-CNRS (France) and Vrije Univ. Brussel (Belgium)

M. Sciamanna

Supélec, LMOPS-CNRS (France)

M. Nizette

Univ. Libre de Bruxelles (Belgium)

H. Thienpont, K. Panajotov

Vrije Univ. Brussel (Belgium)

Proc. SPIE 6997, Semiconductor Lasers and Laser Dynamics III, 699713 (May 05, 2008); doi:10.1117/12.781445
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From Conference Volume 6997

  • Semiconductor Lasers and Laser Dynamics III
  • Krassimir P. Panajotov; Marc Sciamanna; Angel A. Valle; Rainer Michalzik
  • Strasbourg, France | April 07, 2008

abstract

We experimentally and numerically report on polarization switching (PS) mechanism which involves a two-mode limit cycle dynamics in a vertical-cavity surface-emitting laser (VCSEL) subject to orthogonal optical injection from a master laser (ML). The VCSEL (slave laser, SL) emits a horizontal linearly polarized (LP) fundamental mode, without optical injection. The VCSEL is injected by a vertically polarized light from ML. Dynamical characteristics of the VCSEL are investigated as a function of optical injection parameters, i.e., injection strength and frequency detuning between master and slave lasers. We experimentally resolve an injection parameter region for which, as the injection strength is increased for fixed detunings, a limit cycle dynamics in both non-injected and injected modes is abruptly excited. For larger injection strengths, the VCSEL switches from the two-mode to a single-mode limit cycle dynamics which involves only the injected mode. Using continuation methods, we numerically identify two torus bifurcation mechanisms, namely TR 1 and TR 2, which support such a switching scenario. We show that both TR 1 and TR 2 originate from a particular Hopf bifurcation which plays a key role in the polarization dynamics of the injected VCSEL. Furthermore, our results reveal that the newly observed switching dynamics are generic features of VCSEL two-mode systems.

© (2008) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

I. Gatare ; M. Sciamanna ; M. Nizette ; H. Thienpont and K. Panajotov
"Excitation of a two-mode limit cycle dynamics on the route to polarization switching in a VCSEL subject orthogonal to optical injection", Proc. SPIE 6997, Semiconductor Lasers and Laser Dynamics III, 699713 (May 05, 2008); doi:10.1117/12.781445; http://dx.doi.org/10.1117/12.781445


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