Encrypted Audio Transmission Using Synchronized Nd: YAG Lasers

Encoded information based on synchronization of coupled chaotic Nd:YAG lasers in master-slave configuration is numerically studied. Encoding, transmission, and decoding of information in optical chaotic communication with a single channel is presented. We analyze the robustness of the encrypted audio transmission in a channel noise. In order to illustrate this synchronization robustness, we present two cases of study: synchronization and transmission with a single channel without and with noise in the channel. Keywords—Encryption, Secure coomunication, Chaos, Synchronization, Complex networks, Nd:YAG laser.

[1]  Xiao Fan Wang,et al.  Synchronization in Small-World Dynamical Networks , 2002, Int. J. Bifurc. Chaos.

[2]  M. Hasler,et al.  Communication by chaotic signals : the inverse system approach , 1996 .

[3]  César Cruz-Hernández,et al.  Output Synchronization of Chaotic Systems: Model-Matching Approach with Application to Secure Communication , 2005 .

[4]  Alan V. Oppenheim,et al.  Synchronization of Lorenz-based chaotic circuits with applications to communications , 1993 .

[5]  F Kannari,et al.  Experiments on chaos synchronization in two separate microchip lasers. , 1999, Optics letters.

[6]  Cuomo,et al.  Circuit implementation of synchronized chaos with applications to communications. , 1993, Physical review letters.

[7]  P ? ? ? ? ? ? ? % ? ? ? ? , 1991 .

[8]  H. Serrano-Guerrero,et al.  Experimental realization of binary signals transmission using chaos , 2002, IEEE 2002 International Conference on Communications, Circuits and Systems and West Sino Expositions.

[9]  Edward Ott.  Chaos in Dynamical Systems: Control and synchronization of chaos , 2002 .

[10]  César Cruz-Hernández,et al.  EXPERIMENTAL REALIZATION OF BINARY SIGNALS TRANSMISSION BASED ON SYNCHRONIZED LORENZ CIRCUITS , 2004 .

[11]  César Cruz-Hernández,et al.  Synchronization of Time-Delay Chua's Oscillator with Application to Secure Communication , 2004 .

[12]  Carroll,et al.  Synchronization in chaotic systems. , 1990, Physical review letters.

[13]  Roy,et al.  Communication with chaotic lasers , 1998, Science.

[14]  John R. Terry,et al.  Synchronization of chaos in an array of three lasers , 1999 .

[15]  D. López-Mancilla,et al.  Output synchronization of chaotic systems under nonvanishing perturbations , 2008 .

[16]  P. Colet,et al.  Synchronization of chaotic semiconductor lasers: application to encoded communications , 1996, IEEE Photonics Technology Letters.

[17]  ANA Y. AGUILAR-BUSTOS,et al.  Synchronization of two hyperchaotic R ö ssler systems : Model-matching approach 1 , 2005 .

[18]  John R. Terry.  A Comparative Analysis of RÖssler Type Dynamics and Laser Systems , 2002, Int. J. Bifurc. Chaos.

[19]  Xiao Fan Wang,et al.  Synchronization in scale-free dynamical networks: robustness and fragility , 2001, cond-mat/0105014.

[20]  César Cruz-Hernández,et al.  Communicating via synchronized time-delay Chua’s circuits , 2008 .

[21]  S. Sivaprakasam,et al.  Message encoding and decoding using chaotic external-cavity diode lasers , 2000, IEEE Journal of Quantum Electronics.

[22]  Henk Nijmeijer,et al.  An observer looks at synchronization , 1997 .

[23]  John R. Terry,et al.  Blowout bifurcation in a system of coupled chaotic lasers , 1998 .

[24]  César Cruz-Hernández,et al.  CRYPTOSYSTEMS BASED ON SYNCHRONIZED CHUA’S CIRCUITS , 2005 .

[25]  Roy,et al.  Experimental synchronization of chaotic lasers. , 1994, Physical review letters.

[26]  Hebertt Sira-Ramírez,et al.  Synchronization of Chaotic Systems: a generalized Hamiltonian Systems Approach , 2001, Int. J. Bifurc. Chaos.

[27]  P Colet,et al.  Digital communication with synchronized chaotic lasers. , 1994, Optics letters.

[28]  Encoded Gbit/s digital communications with synchronized chaotic semiconductor lasers , 1999 .

[29]  Roy,et al.  Coherence and phase dynamics of spatially coupled solid-state lasers. , 1993, Physical review. A, Atomic, molecular, and optical physics.

[30]  Henk Nijmeijer,et al.  Synchronization through Filtering , 2000, Int. J. Bifurc. Chaos.

[31]  Xiao Fan Wang,et al.  Complex Networks: Topology, Dynamics and Synchronization , 2002, Int. J. Bifurc. Chaos.

[32]  R. M. López-Gutiérrez,et al.  Synchronization of chaotic solid-state Nd:YAG lasers: Application to secure communication , 2008 .