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中文摘要：
利用3个半导体激光器构成的环形激光器实验产生了平坦的宽带混沌信号.环形结构中,每个半导体激光器的输出注入后继的激光器以形成环路.注入光的强度由半导体激光器间的光放大器或者衰减器来控制,注入光的频率失谐量由改变半导体激光器的工作温度来调谐.实验所产生的混沌光信号带宽超过27GHz（受限于所用频谱仪的测量带宽）,其频谱平坦度小于5dB.
英文摘要：
Generation of flat broadband chaotic signal is demonstrated experimentally with a semiconductor laser loop,which consists of three laser diodes mainly.The output of each laser diode is injected into its neighbor diode as a loop.The injection light strength is controlled with erbium-dropped optical fiber amplifier or attenuator which is inserted between the diodes,and the detuning is adjusted by changing the temperature of the laser diode.Limited by the bandwidth of the laser diode,the bandwidth of the flat broadband chaotic signal is broader than 27 GHz or even more,and the fluctuation of the spectrum cure is less than 5 dB.
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