Time delay signature concealment of optical feedback induced chaos in an external cavity semiconductor laser.

The time delay (TD) signature concealment of optical feedback induced chaos in an external cavity semiconductor laser is experimentally demonstrated. Both the evolution curve and the distribution map of TD signature are obtained in the parameter space of external feedback strength and injection current. The optimum parameter scope of the TD signature concealment is also specified. Furthermore, the approximately periodic evolution relation between TD signature and external cavity length is observed and indicates that the intrinsic relaxation oscillation of semiconductor laser may play an important role during the process of TD signature suppression.

[1]  Jiagui Wu,et al.  Suppression of time delay signatures of chaotic output in a semiconductor laser with double optical feedback. , 2009, Optics express.

[2]  Laurent Larger,et al.  Chaos-based communications at high bit rates using commercial fibre-optic links , 2005, Nature.

[3]  Parisi,et al.  Tool to recover scalar time-delay systems from experimental time series. , 1996, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics.

[4]  S. Ortin,et al.  Time-Delay Identification in a Chaotic Semiconductor Laser With Optical Feedback: A Dynamical Point of View , 2009, IEEE Journal of Quantum Electronics.

[5]  M. Lee,et al.  Dynamical characterisation of laser diode subject to double optical feedback for chaotic optical communications , 2005 .

[6]  D S Citrin,et al.  Loss of time-delay signature in the chaotic output of a semiconductor laser with optical feedback. , 2007, Optics letters.

[7]  Anatoly S. Karavaev,et al.  Reconstruction of time-delayed feedback systems from time series , 2005 .

[8]  I. Kanter,et al.  An optical ultrafast random bit generator , 2010 .

[9]  R. Toral,et al.  Analysis and characterization of the hyperchaos generated by a semiconductor laser subject to a delayed feedback loop , 2005, IEEE Journal of Quantum Electronics.

[10]  A. Uchida,et al.  Fast physical random bit generation with chaotic semiconductor lasers , 2008 .

[11]  Jia-Ming Liu,et al.  Chaotic radar using nonlinear laser dynamics , 2004 .

[12]  Zheng-Mao Wu,et al.  Experimental investigations on the external cavity time signature in chaotic output of an incoherent optical feedback external cavity semiconductor laser , 2009 .

[13]  S. Giovannoni,et al.  Molecular diversity and ecology of microbial plankton , 2005, Nature.

[14]  Holger Kantz,et al.  Identifying and Modeling Delay Feedback Systems. , 1998, chao-dyn/9907019.