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Simultaneous Generation of Two Sets of Time Delay Signature Eliminated Chaotic Signals by Using Mutually Coupled Semiconductor Lasers

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7 Author(s)
Jia-Gui Wu ; School of Physics, Southwest University, Chongqing, China ; Zheng-Mao Wu ; Xi Tang ; Xiao-Dong Lin
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Simultaneous generation of two sets of time delay (TD) signature suppressed chaotic signals is experimentally demonstrated by using a mutually delay-coupled semiconductor laser (MDC-SL) system. The experimental results show that under proper conditions, TD signatures of chaotic output signals in such a system can be eliminated, and two sets of low TD signature chaotic signals can be simultaneously obtained. Furthermore, both the TD signature evolution pattern and the optimum scope for TD signature elimination are experimentally specified by modulating the coupling strength and adjusting frequency detuning between the two mutually coupled lasers.

Published in:

IEEE Photonics Technology Letters  (Volume:23 ,  Issue: 12 )