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. A flattened broadband chaotic signal is generated experimentally using a ring laser consisting of three semiconductor lasers, in which the output of each semiconductor laser is injected into a subsequent laser to form a loop.The intensity of the injected light is determined by the optical amplifier between the semiconductor lasers or the attenuated The frequency mismatch of injected light is tuned by changing the operating temperature of the semiconductor laser.The chaotic optical signal bandwidth generated by the experiment exceeds 27GHz (limited by the measuring bandwidth of the spectrum analyzer used), and its spectral flatness is less than 5dB.