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非对称电流偏置下互耦半导体激光器的混沌同步特性研究

何元 邓涛 吴正茂 刘元元 夏光琼

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非对称电流偏置下互耦半导体激光器的混沌同步特性研究

何元, 邓涛, 吴正茂, 刘元元, 夏光琼

Investigations on chaos synchronization characteristics of mutually coupled semiconductor lasers with asymmetrical bias currents

He Yuan, Deng Tao, Wu Zheng-Mao, Liu Yuan-Yuan, Xia Guang-Qiong
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  • 利用两个电流偏置在不同值的半导体激光器(SL)构建一个延时互耦系统,实验研究了两个SL的非对称偏置电流和频率失谐Δf(=f1-f2,f1,f2分别对应SL1和SL2的自由振荡频率)对系统混沌同步性能的影响.研究结果表明:对于两个振荡频率一致的SL,当两个SL的偏置电流差异较大时系统能实现较好的混沌同步;通过调节两个SL的温度,使两个SL的振荡频率失谐,对于SL1电流远大于SL2电流的情形,正频率失谐
    Based on a delayed mutually coupled system consisting of two semiconductor lasers (SL) with different injection currents, the influences of the asymmetric bias currents of two SLs and the frequency detuning Δf (Δf=f1-f2, where f1 and f2 are the free frequencies of SL1 and SL2 respectively) on synchronization performance have been investigated experimentally. The results show that for the case of the two SLs with identical free oscillation frequencies, the mutually coupled system can achieve excellent chaos synchronization under relatively large asymmetrical injection currents. Furthermore, the frequency detuning, controlled by adjusting the temperature of one of the two SLs, has an obvious influence on synchronization performance. For the case of the SL1 biased at a relatively much larger current than that of SL2, the synchronization performance will degrade with the increase of the positive frequency detuning (f1>f2), while the synchronization performance can be further improved with suitable negative frequency detuning. The simulated results are basically consistent with experimental results.
    • 基金项目: 国家自然科学基金(批准号:60978003,61078003),中央高校基本科研业务费专项资金(批准号:XDJK2009B010)资助的课题.
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    [11]

    Buldú J M, García-Ojalvo J, Torrent M C 2004 IEEE J. Quantum Electron. 40 640

    [12]

    Liu J, Wu Z M, Xia G Q 2009 Opt. Express 17 12619

    [13]

    Wu J G, Xia G Q, Wu Z M 2009 Opt. Express 17 20124

    [14]

    Wu J G, Xia G Q, Tang X, Lin X D, Deng T, Fan L, Wu Z M 2010 Opt. Express 18 6661

    [15]

    Hohl A, Gavrielides A, Erneux T, Kovanis V 1997 Phys. Rev. Lett. 78 474

    [16]

    Fujino H, Ohtsubo J 2001 Opt. Rev. 8 351

    [17]

    Heil T, Fischer I, Elsasser W, Mulet J, Mirasso C R 2001 Phys. Rev. Lett. 86 795

    [18]

    Klein E, Gross N, Rosenbluh M, Kinzel W, Khaykovich L, Kanter I 2006 Phys. Rev. E 73 066214

    [19]

    Vicente R, Mirasso C R 2007 Opt. Lett. 32 403

    [20]

    Chen Z L, Zhou P, Xu X J, Hon J, Jiang Z F 2008 Acta Phys. Sin. 57 3588 (in Chinese) [陈子伦、周 朴、许晓军、侯 静、姜宗福 2008 物理学报 57 3588]

    [21]

    Deng T, Xia G Q, Cao L P, Chen J G, Lin X D, Wu Z M 2009 Opt. Commun. 282 2243

    [22]

    Gao Z C, Wu Z M, Cao L P, Xia G Q 2009 Appl. Phys. B 97 645

    [23]

    Gross N, Kinzel W, Kanter I, Rosenbluh M, Khaykovich L 2006 Opt. Commun. 267 464

    [24]

    Rogister F, Garacía-Ojalvo J 2003 Opt. Lett. 28 1176

    [25]

    Zhang W L, Pan W, Luo B, Zou X H, Wang M Y, Zhou Z 2008 Opt. Lett. 33 237

    [26]

    Zhang W L, Pan W, Luo B, Zou X H, Wang M Y 2008 IEEE Photon. Technol. Lett. 20 712

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出版历程
  • 收稿日期:  2010-05-17
  • 修回日期:  2010-06-22
  • 刊出日期:  2011-02-05

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