Observation of cascade complete-chaos synchronization with zero time lag in laser diodes

This paper reports the first experimental observation and theoretical description of zero time lag, complete-chaos synchronization using three laser diodes coupled in a unidirectional cascade configuration. The master laser is rendered chaotic by optical feedback from an external mirror. The output intensity of the master laser is injected into an intermediate laser, and the output intensity of this intermediate laser is in turn injected into a slave laser. The distances between the lasers are carefully adjusted such that the times of flight between the lasers are equal to the delay time in the external-cavity of the master laser. When the three lasers are subject to the same optical injection strength it is observed that their output intensities synchronize with zero time lag. The chaos synchronization has been confirmed by time traces and synchronization diagrams of the three laser outputs, and the null lag time has been measured from cross-correlation diagrams. Numerical simulations based on single-mode rate equations are in good qualitative agreement with the experimental observations.

[1]  Ingo Fischer,et al.  Synchronization of chaotic semiconductor laser dynamics on subnanosecond time scales and its potential for chaos communication , 2000 .

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

[3]  Min Won Lee,et al.  Comparison of closed-loop and open-loop feedback schemes of message decoding using chaotic laser diodes. , 2003, Optics letters.

[4]  Yoshiro Takiguchi,et al.  Injection locking and synchronization of periodic and chaotic signals in semiconductor lasers , 2003 .

[5]  Junji Ohtsubo,et al.  Observation of the synchronization of chaos in mutually injected vertical-cavity surface-emitting semiconductor lasers. , 2003, Optics letters.

[6]  J. Kurths,et al.  From Phase to Lag Synchronization in Coupled Chaotic Oscillators , 1997 .

[7]  Laurent Larger,et al.  Transmission system using chaotic delays between lightwaves , 2003 .

[8]  C Masoller,et al.  Synchronization regimes of optical-feedback-induced chaos in unidirectionally coupled semiconductor lasers. , 2002, Physical review. E, Statistical, nonlinear, and soft matter physics.

[10]  A. Murakami,et al.  Phase locking and chaos synchronization in injection-locked semiconductor lasers , 2003 .

[11]  C. R. Mirasso,et al.  Open-versus closed-loop performance of synchronized chaotic external-cavity semiconductor lasers , 2002 .

[12]  Paul Mandel,et al.  Two regimes of synchronization in unidirectionally coupled semiconductor lasers. , 2002, Physical review. E, Statistical, nonlinear, and soft matter physics.

[13]  A. Uchida,et al.  Dual synchronization of chaos in microchip lasers. , 2003, Optics letters.

[14]  A Uchida,et al.  Dual synchronization of chaos in one-way coupled microchip lasers. , 2003, Physical review. E, Statistical, nonlinear, and soft matter physics.

[15]  C. Masoller,et al.  Chaos shift-keying encryption in chaotic external-cavity semiconductor lasers using a single-receiver scheme , 2002, IEEE Photonics Technology Letters.

[16]  Cascaded synchronization of external-cavity laser diodes. , 2001, Optics letters.

[17]  K. Shore,et al.  Two-mode chaos synchronization using a multimode external-cavity laser diode and two single-mode laser diodes , 2005, Journal of Lightwave Technology.

[18]  P. Colet,et al.  Criteria for synchronization of coupled chaotic external-cavity semiconductor lasers , 2002, IEEE Photonics Technology Letters.

[19]  Laurent Larger,et al.  Chaos shift keying with an optoelectronic encryption system using chaos in wavelength , 2001 .

[20]  E. Ott,et al.  Detecting phase synchronization in a chaotic laser array. , 2001, Physical review letters.

[21]  Javier M. Buldú,et al.  Periodic entrainment of power dropouts in mutually coupled semiconductor lasers , 2002 .

[22]  S.R.J. Brueck,et al.  Nanoscale spatial phase modulation of GaN on a V-grooved Si Substrate-cubic phase GaN on Si(001) for monolithic integration , 2005, IEEE Journal of Quantum Electronics.

[23]  Yanhua Hong,et al.  Synchronization of chaos in unidirectionally coupled vertical-cavity surface-emitting semiconductor lasers. , 2004, Optics letters.

[24]  A Uchida,et al.  Transient characteristics of chaos synchronization in a semiconductor laser subject to optical feedback. , 2004, Physical review. E, Statistical, nonlinear, and soft matter physics.

[25]  K. Alan Shore,et al.  Dual-channel chaotic optical communications using external-cavity semiconductor lasers , 2004 .

[26]  C. R. Mirasso,et al.  ON/OFF phase shift keying for chaos-encrypted communication using external-cavity semiconductor lasers. (Invited paper) , 2002 .

[27]  K. Alan Shore,et al.  Optically modulated chaotic communication scheme with external-cavity length as a key to security , 2003 .

[28]  C. Mirasso,et al.  Chaos synchronization and spontaneous symmetry-breaking in symmetrically delay-coupled semiconductor lasers. , 2001, Physical review letters.

[29]  Junji Ohtsubo,et al.  Synchronization of feedback-induced chaos in semiconductor lasers by optical injection , 2002 .

[30]  F Kannari,et al.  Chaotic on off keying for secure communications. , 2001, Optics letters.

[31]  J. Paul,et al.  3.5-GHz signal transmission in an all-optical chaotic communication scheme using 1550-nm diode lasers , 2005, IEEE Photonics Technology Letters.

[32]  K A Shore,et al.  Demonstration of optical synchronization of chaotic external-cavity laser diodes. , 1999, Optics letters.

[33]  C. Masoller.  Anticipation in the synchronization of chaotic semiconductor lasers with optical feedback. , 2001, Physical review letters.

[34]  J M Liu,et al.  Experimental verification of anticipated and retarded synchronization in chaotic semiconductor lasers. , 2003, Physical review letters.

[35]  Yoshiro Takiguchi,et al.  Experimental observation of complete chaos synchronization in semiconductor lasers , 2002 .

[36]  Cristina Masoller,et al.  Modeling bidirectionally coupled single-mode semiconductor lasers , 2002 .

[37]  S Tang,et al.  Message encoding-decoding at 2.5 Gbits/s through synchronization of chaotic pulsing semiconductor lasers. , 2001, Optics letters.