Photonic ultrawideband signal generator using an optically injected chaotic semiconductor laser |
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Authors: | Zhang Ming-Jiang Liu Tie-Gen Wang An-Bang Zheng Jian-Yu Meng Li-Na Zhang Zhao-Xia Wang Yun-Cai |
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Affiliation: | Institute of Optoelectronic Engineering, Department of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan, China. |
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Abstract: | We propose and demonstrate a method to generate ultrawideband (UWB) signals in the optical domain based on the chaotic dynamics of an optically injected semiconductor laser with optical feedback. The chaotic-UWB pulses with a fractional bandwidth of 116% and central frequency of 6.88?GHz are experimentally generated by controlling the injection strength and frequency detuning of the chaotic laser. The spectrum of the UWB signals is in full compliance with the Federal Communications Commission spectral mask, and the experimental results are qualitatively consistent with the simulated results. |
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