利用相位共轭与色散配置实现具有大占空比和大放大器间隔的长距离光孤子传输

在用光纤放大器补偿损耗的光纤传输线中，用负色散光纤与正色散光纤或色散补偿器件交叉配置，并使传输线中光纤的有效色散适当大于（与平均孤子对应的）理论值，同时在传输线中周期地使用相位共轭器，可以在把放大器间隔提高到与常规光纤通信相同的条件下有效地削弱孤子之间的互作用。本文对实现速率为２５Ｇｂｉｔ／ｓ、占空比为１／２、光放大器间隔为１００ｋｍ、传输距离大于６０００ｋｍ的光孤子传输作出了数值论证

Long Distance Optical Soliton Transmission with Large Pulse Duty Ratio and Large Amplifier Spacing Using Phase Conjugation and Dispersion Allocation

In an optical fiber transmission line, wich employs optical fiber amplifiers to compensate the transmission loss and is composed of alternatively allocated negative dispersion fibers and positive dispersion fibers or dispersion compensators, making the efficient dispersion of the transmission line properly higher than the theoretical value corresponding to the average soliton and using phase conjugstors periodically along the line, the interaction among the solitons can be reducted effectively under the amplifier spacing is increased as same as in the ordinary linear optical fiber communication. The soliton transmission with pulse duty ratio of 1/2, amplifier spacing of 100 km and transmission distance of 6000km or more is demonstrated numerically.