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Phys. Rev. A 72, 043818 (2005) [6 pages]

Two-field description of chaos synchronization in diode lasers with incoherent optical feedback and injection

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David W. Sukow1,*, Athanasios Gavrielides2, Thomas Erneux3, Michael J. Baracco1, Zachary A. Parmenter1, and Karen L. Blackburn1
1Department of Physics and Engineering, Washington and Lee University, 116 North Main Street, Lexington, Virginia 24450, USA
2Air Force Research Laboratory, Directed Energy Directorate AFRL/DELO, 3550 Aberdeen Avenue SE, Kirtland AFB, New Mexico 87117, USA
3Université Libre de Bruxelles, Optique Nonlinéaire Théorique, Campus Plaine, Code Postal 231, 1050 Bruxelles, Belgium

Received 14 July 2005; published 24 October 2005

Synchronized chaotic dynamics are investigated theoretically and experimentally in a system of unidirectionally-coupled semiconductor lasers subject to delayed, polarization-rotated optical feedback and injection. Experimental data in the time and frequency domains demonstrate chaos synchronization with a lag between transmitter and receiver equal to the injection time, also known as driving synchronization. The natural polarization mode of the transmitter is shown to synchronize most efficiently to the orthogonal state of the receiver which is being injected. A full two-polarization model is used for both lasers, and is in good agreement with polarization-resolved experimental measurements.

© 2005 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.72.043818
DOI:
10.1103/PhysRevA.72.043818
PACS:
42.65.Sf, 42.55.Px, 05.45.Xt

*Electronic address: sukowd@wlu.edu