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基于谐波拟合产生周期性三角形光脉冲串的实验研究

李晶 宁提纲 裴丽 简伟 郑晶晶 油海东 孙剑 王一群 李超

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基于谐波拟合产生周期性三角形光脉冲串的实验研究

李晶, 宁提纲, 裴丽, 简伟, 郑晶晶, 油海东, 孙剑, 王一群, 李超

Experimental demonstration on triangular-shaped pulse train generation based on harmonic fitting

Li Jing, Ning Ti-Gang, Pei Li, Jian Wei, Zheng Jing-Jing, You Hai-Dong, Sun Jian, Wang Yi-Qun, Li Chao
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  • 实验研究了一种基于谐波拟合产生周期性三角形光脉冲串的方法,方案首先利用马赫曾德调制器的载波抑制调制,获得具有周期性起伏的连续光强度信号,然后利用光纤色散所致的射频功率衰落效应,对光强度表达式中四次谐波分量进行抑制,调节调制深度后,光强度表达式将向理想三角形傅里叶展开式的前三项进行逼近,最后以谐波拟合的方式获得重复频率为射频调制频率二倍的周期性三角形光脉冲串. 结合实验,在9.862 GHz和7.678 GHz射频调制频率下,获得了脉冲重复频率19.724 Gb/s(脉冲全宽约50.7 ps)和15.356 Gb/s(脉冲全宽约65.1 ps)的稳定三角形光脉冲串输出,改变色散量并反向调节调制频率,可进一步改变脉冲的重复频率,所获得的实验结果与理论预期基本符合.
    We demonstrate an approach for triangular-shaped pulse train generation experimentally based on harmonic fitting. The operation principle is that a Mach-Zehnder modulator is firstly employed to suppress modulation of the optical carrier. Thus a periodically variable lightwave can be obtained at the output. Then the signal is coupled into a section of dispersive fiber. Due to the dispersion-induced power fading, the undesired 4th order harmonics in the optical intensity can be fully removed. By adjusting modulation index to an optimum value (m=2.305), the generated harmonics of the optical intensity can be made corresponding to the Fourier components of typical periodic triangular pulses. Finally, the triangular-shaped pulse train at a repetition rate two times of the driving frequency can be obtained. In the experiments, 19.724 Gb/s and 15.356 Gb/s triangular-shaped pulse trains are generated by using 9.862 GHz and 7.678 GHz driving signals respectively. Besides, the repetition rate can be switched to another value by using a different fiber dispersion ( 2L). It is found that the experimental data agree well with theoretical results.
    • 基金项目: 中央高校基本科研业务费专项资金(批准号:2014JBM013)资助的课题.
    • Funds: Project supported by the Fundamental Research Funds for the Central Universities of China (Grant No. 2014JBM013).
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    [7]
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    Li J, Ning T, Pei L, Qi C 2010 Chinese Optical Letter 8 138

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    [10]

    Camerlingo A, Parmigiani F, Xian F, Poletti F, Horak P, Loh W H, Richardson D J, Petropoulos P 2010 IEEE Photonics Technology Letters 22 628

    [11]

    Parmigiani F, Ibsen, Ng T T, L. Provost A, Petropoulos P, Richardson D J Proceedings of the 2008 Optical Fiber Communication Conference (OFC'08), San Diego, CA, USA 2008, OMP3

    [12]
    [13]

    Bhamber R S, Latkin A I, Boscolo S, Turitsyn S K Proceedings of the 34th European Conference on Optical Communication (ECOC 2008), Brussels, Belgium, 2008, Th.1B.2

    [14]
    [15]
    [16]

    Latkin A I, Boscolo S, Bhamber R S, Turitsyn S K 2009 J. Opt. Soc. Am. B 26 1492

    [17]
    [18]

    Latkin A I, Boscolo S, Bhamber R S, Turitsyn S K Proceedings of the the 34th European Conference on Optical Communication (ECOC 2008), Brussels, Belgium, 2008, Mo.3F.4

    [19]
    [20]

    Parmigiani F, Petropoulos P, Ibsen M, Richardson D J 2006 IEEE Photonics Technology Letters 18 829

    [21]

    Boscolo S, Latkin A I, Turitsyn S K 2008 IEEE Journal of Quantum Electronics 44 1196

    [22]
    [23]

    Wang H, Latkin A I, Boscolo S, Harper P, Turitsyn S K 2010 Journal of Optics 12 035205

    [24]
    [25]

    Wang H 2012 Acta Phys. Sin. 61 124212 (in Chinese) [王华 2012 物理学报 61 124212]

    [26]
    [27]
    [28]

    Ye J, Yan L, Pan W, Luo B, Zou X, Yi S, Yao S 2011 Opt. Lett. 36 1458

    [29]

    Dai B, Gao Z, Wang X, Kataoka N, Wada N 2011 Electronics Letters 47 336

    [30]
    [31]
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    Dai B, Gao Z, Wang X, Chen H, Nobuyuki K, Wada N 2013 Journal of Lightwave Technology 31 145

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    Li J, Zhang X, Hraimel B, Ning T, Pei L, Wu K 2012 Journal of Lightwave Technology 30 1617

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    Liu H, Ren B, Feng J 2012 Chin. Phys. B 21 040501

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    Tian F, Zhang X, Weng X, Xi L, Zhang Y, Zhang W 2011 Chin. Phys. B 20 080702

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出版历程
  • 收稿日期:  2014-01-14
  • 修回日期:  2014-03-12
  • 刊出日期:  2014-08-05

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