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利用强度调制的数据信号光作为一路抽运光,与另一路直流或者正弦强度调制抽运光组合可以在双抽运光纤光参变放大过程中实现全光多波长变换或者在全光多波长变换的同时实现码型转换。理论上,从信号增益的角度分析了波长转换与码型转换的原理。实验上演示了2.5Gb/s的非归零(NRZ)码信号的全光多波长转换与到归零(RZ)码信号的转换。多波长转换实验表明:双抽运条件下的光参变过程可以实现多波长转换并得到正、反码的输出,还同时对信号有一定的再生作用。码型转换后信号的占空比为30%,消光比也得到提高。
The use of intensity-modulated data signal light as a pump light, and another channel DC or sinusoidal modulation light pumping light combination can be achieved in the double-pumped fiber optical parametric amplification of all-optical multi-wavelength conversion or in all-optical multi-wavelength conversion While achieving pattern conversion. In theory, the principle of wavelength conversion and pattern conversion is analyzed from the perspective of signal gain. Experiments demonstrate the all-optical multi-wavelength conversion and the return to zero (RZ) code signal conversion of 2.5Gb / s non-return to zero (NRZ) code signals. The experiment of multiwavelength conversion shows that the optical parametrization under double pumping conditions can realize multiwavelength conversion and obtain the output of positive and negative codes, and at the same time, it can regenerate the signal at the same time. The duty cycle of the signal after the pattern conversion is 30%, and the extinction ratio is also improved.