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Experimental Investigation of Chaos Synchronization in DFB Diode Lasers with Unsymmetrical Scheme |
| YANG Ling-Zhen, ZHANG Xiu-Juan, WANG An-Bang, GUO Dong-Ming, WANG Yun-Cai |
| Department of Physics, College of Science, Taiyuan University of Technology, Taiyuan 030024 |
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YANG Ling-Zhen, ZHANG Xiu-Juan, WANG An-Bang et al 2008 Chin. Phys. Lett. 25 3883-3885 |
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Abstract We experimentally generate high dimension chaotic waveforms with smooth spectrum using a distributed feedback (DFB) semiconductor laser with unidirectional fibre ring long-cavity feedback, and implement the stable chaos synchronization when the chaotic light is injected into a solitary DFB laser diode. The synchronization quality is investigated by time-domain and frequency-domain analysis separately. The frequency-domain analysis indicates that the synchronization has higher quality in the high frequency band. The influences of the injection strength and the frequency detuning on the synchronization are measured. Our experimental results show that the robust synchronization can be maintained with the optical frequency detuning from -11GHz to 40 GHz.
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| Keywords:
05.45.Jn
05.45.Xt
42.55.Px
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Received: 04 June 2008
Published: 25 October 2008
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| PACS: |
05.45.Jn
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(High-dimensional chaos)
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05.45.Xt
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(Synchronization; coupled oscillators)
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42.55.Px
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(Semiconductor lasers; laser diodes)
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