We demonstrate experimental chaos synchronization between two chaotic semiconductor lasers subjected to polarization-rotated optical feedback and unidirectional injection. This system allows high-quality synchronization to be obtained between dissimilar lasers in a wide range of chaotic operating regimes. Another feature of this system is its operation at high characteristic frequencies, taking advantage of all-optical implementation. Time series and RF spectra showing synchronization are confirmed by high correlation coefficients in excess of 0.85.
© 2004 Optical Society of America
(140.1540) Lasers and laser optics : Chaos
(140.2020) Lasers and laser optics : Diode lasers
(140.5960) Lasers and laser optics : Semiconductor lasers
(190.3100) Nonlinear optics : Instabilities and chaos
David W. Sukow, Karen L. Blackburn, Allison R. Spain, Katherine J. Babcock, Jake V. Bennett, and Athanasios Gavrielides, "Experimental synchronization of chaos in diode lasers with polarization-rotated feedback and injection," Opt. Lett. 29, 2393-2395 (2004)