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理论上证明了一种新的孤子可以在单模光纤中稳定传输，其波形为ｓｅｃｈ（１／２）（ｘ）。对于普通光纤，在工作波长为１．３μｍ处，当输入峰值功率为１Ｗ时，这种孤子脉冲的脉宽大约为１ｎｓ。
It is theoretically proved that a new soliton can be transmitted stably in single-mode fiber with a waveform of sech (1/2) (x). For normal fiber, at a working wavelength of 1.3 μm, the pulse width of this soliton pulse is about 1 ns when the input peak power is 1 W.