Document Type : Research Paper

Authors

1 University of Anbar - College of education for pure sciences.

2 University of Anbar - College of Applied Sciences-Heet

3 Baghdad University-College Of Science

Abstract

An experimentally observations of chaos synchronization have been investigated between two optically coupled laser diodes. Two schemes of optical injection, bidirectional and unidirectional optical injections have been used. One of the two lasers MLD exhibits optical chaos due to external optical feedback by fiber mirror and the other laser diode SLD exhibits optical chaos by optical injection from the first one. The chaotic dynamics of both lasers were a function of laser diodes drive current. Synchronization and Anti-synchronization between two coupled laser diodes have been observed, and ensured by different measurements like time series matching ,correlation diagram(phase form)of amplitudes of coupled chaotic signals ,spectrum components coinciding of coupled chaotic signals, and coherence have been used for both injection schemes.

Keywords

Main Subjects

[1]L. M. Pecora and T. L. Carroll"Synchronization in Chaotic systems", Phys. Rev. lett., Vol.64, No.8, 1990
 [2] V. Annovazzi-Lodi, S. Donati,and A.Scir´e" Synchronization of Chaotic Lasers by Optical Feedback for Cryptographic Applications", IEEE J.Of Quant. Elec., Vol.33, No. 9, Sept. 1997
 [3] M. Sciamanna, I. Gatare, A. Locquet, and K. Panajotov"Polarization synchronization in unidirectionally coupled vertical-cavity surface-emitting lasers with orthogonal optical injection", PHYSICAL REVIEW E 75, 056213, 2007
[4] S. Boccalettia, J. Kurths, G. Osipovd, D.L. Valladares, C.S. Zhou"Synchronization of chaotic systems",Physics Reports 366 , 1–101,Elsevier Science, 2002
 [5]S. Tang and J. M. Liu "Chaos Synchronization in Semiconductor Lasers with Optoele- ctronicFeedback",IEEE J. of Quant.Elect., Vol. 39, No. 6, 2003
 [6] E. Allaria, F. T. Arecchi, A. Di Garbo, and R. Meucci "Synchronization of Homoclinic Chaos", Physical Review Letters, Vol.86, No.5, 29 Jan. 2001
 [7] F.T. Arecchia,b, R. Meuccia, A. Di Garboa, E. Allariaa "Homoclinic chaos in a laser: synchronization and its implications in biological systems", Elsevier, Optics and Lasers in Engineering 39 (2003)
[8] Y. Liu, Y. Takiguchi, P. Davis, T. Aida, and S. Saito"Experimental observation of complete chaos synchronization in semiconductor lasers", Applied Physics Letters,Vol.80, No.23, 10June 2002
[9] Ming-Ch.  Ho, Y. C. Hung, I-M. Jiang" On the synchronization of uncertain chaotic systems", Elsevier, Chaos, Solitons and Fractals 33 (2007)
 [10] Y. Liu, P. Davis, and T. Aida" Synchronized Chaotic Mode Hopping in DBR Lasers with Delayed Opto-Electric Feedback", IEEE J. Of Quant. Elec. Vol. 37, No. 3, March 2001
 [11]H. Fujino and J. Ohtsubo" Experimental synchronization of chaotic oscillations inexternal-cavity semiconductor lasers", Optics Letters, Vol. 25, No.9, May 1, 2000
 [12]S. Abdalah, K.Al Naimee, M.Ciszak ,F.Marino, R.Meucci and F.T.Arecchi "Chaos and Mixed Mode oscillation in optoelectronic networks", International Review of Physics,Vol.7.No.3, (2013)
[13] S.F. Abdalaha, K. Al Naimee, M. Ciszak, F. Marino, R. Meucci and F.T. Arecchi " Chaotic and Mixed Mode Oscillation Scenarios in Semiconductor Devices: Generation and Synchronization", ACTA PhysicaPolonica  A, Vol.121, No.1, 2012
 [14] Shui Y. Xiang, Wei Pan, Bin Luo, Lian Shan Yan, Senior Member, IEEE, Xi H. Zou, Nianqiang Li, and Hong Na Zhu "Wideband Unpredictability-Enhanced Chaotic Semiconductor Lasers With Dual-  Chaotic Optical Injections"IEEE J.of Quantum Electronics, Vol. 48, No.8, 2012
 [15]ImmoWedekind and UlrichParlitz"Experimental Observation of synchronization and Anti-synchronization of chaotic low-frequency fluctuation in external cavity semiconductor lasers"International Journal of Bifurcation and Chaos"(2001)Vol.11, No.4
[16] George R. Gray ,A. T. Ryan ,G.P. Agrawal and E. C. Gage" Control of optical-feedback-induced laser intensity noise in optical data recording "Optical Engineering Vol. 32 No. 4, 1993
[17] W. Kinzel, A. Englert and I. Kanter"On chaos synchronization and secure communication", Phil. Trans. Royal Society A (2010) 368, 379–389
[18] K.Petermann  andN.Schunk "Laser diode characteristics with external optical feedback", Proc. European conf. (1988)
 [19]N. Jiang ,W. Pan ,B. Luo, L. Yan ,Sh. Xiang, L. Yang ,Di Zheng and N.Li "Influence of injection current on the synchronization and communication of two unidirectionally coupled semiconductor lasers",Optics letters,Vol.36,Issue 16,(2011)
[20] M.C. Soriano ,J. Garcia O., Claudio R. Mirasso and Ingo Fischer "Complex Photonics   Dynamics and applications of delay-coupled semiconductors lasers", Reviews of Modern Physics ,Vol.85,421-470, (2013),
 [21] G. V. Sande, M. C. Soriano, I. Fischer, and C. R. Mirasso" Dynamics, correlation scaling, and synchronization behavior in rings of delay-coupled oscillators", PHYSICAL REVIEW E 77, 055202(R) 2008
[22]Volker Ahlers,* Ulrich Parlitz, and Werner Lauterborn"Hyperchaoticdynamics and synchronization of external-cavity semiconductor lasers", PHYSICAL REVIEW E, Vol. 58, No.6., (1998)
[23] H. D. I. Abarbanel, Matthew B. Kennel, Lucas Illing, S. Tang, H. F. Chen, and J. M. Liu "Synchronization and Communication Using Semiconductor Lasers With Optoelectronic    Feedback",  IEEE J. Of Quant. Elect., Vol. 37, No. 10, (2001)
[24]A.Hohl, A.Gavrielides, T.Erneux, and V.Kovanis "Localized Synchronization in Two Coupled Non identical semiconductor lasers" Physical Review Letters ,Vol.78,No.25, (1997)
[25]S.Y. Xiang, Wei Pan, Bin Luo, Lian Shan Yan,XiHuaZou, Nianqiang Li, and H. Na Zhu "Wideband Unpredictability-Enhanced Chaotic Semiconductor Lasers With Dual-Chaotic Optical Injections"IEEE J. Of Quantum Electronics, Vol. 48, No.8, (2012)
[26]Valerio A.Lodi , Mauro Benedetti, Sabina Merlo, Michele Norgia"Fiberoptics setup for chaotic cryptographic communications "Elsevier,C. R. Physique 5 , 623–631, (2004)
[27] S.Abdalah, K.Al Naimee,M.Ciszak,F.Marino,R.Meucci, and FT.Arecchi" Chaos and mixed mode oscillations in optoelectronic networks", International Review of physics,vol.7,no.(3),p.278-281,2013.