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根据Ｐｙｒａｇａｓ连续反馈法控制混沌的原理，提出一种全光学型延时反馈法控制半导体激光器混沌的方案，用相干理论分析了该方案实现混沌控制的机理和条件，进行了计算机数值模拟，结果证明了该方案的有效性．
According to the principle of controlling the chaos by Pyragas continuous feedback method, an all-optical delay feedback method is proposed to control the chaos of the semiconductor laser. The theory and method of chaos control are analyzed by the theory of coherence. The numerical simulation is carried out and the results prove The effectiveness of the program.