提出了一种测量单模光纤零色散波长的新方法，即让可调谐的连续波（波长λｓ）和波长λｐ位于光纤正常色散区的泵浦脉冲串在光纤中共同传输，交叉相位调制与群速度色散的相互作用可使得连续波的强度得到调制。对连续波λｓ进行调谐，若连续波被调制成亮脉冲，则表明λｓ位于光纤负色散区；若连续波被调制成暗脉冲，则表明λｓ位于光纤正色散区；若连续波的强度不能被调制，则表明λｓ位于光纤的零色散波长λ０附近。利用这一方法对长度为０．９８ｋｍ的色散位移光纤的零色散波长进行了测量，测量精度可达０．５ｎｍ。 A new method to measure the zero-dispersion wavelength of a single-mode fiber is proposed, in which a pump pulse train with tunable continuous wave (λs) and wavelength λp located in the normal dispersion region of the fiber is co-transmitted in an optical fiber. The cross-phase modulation and group Interaction of velocity dispersion allows the intensity of the continuous wave to be modulated. If the continuous wave is modulated into a bright pulse, it indicates that λs is located in the negative dispersion region of the optical fiber. If the continuous wave is modulated into a dark pulse, λs is located in the positive dispersion region of the optical fiber. If the intensity of the continuous wave can not be Modulation, then λs is located near the zero-dispersion wavelength λ0 of the fiber. Using this method, the zero-dispersion wavelength of a chromatic dispersion-shifted fiber with a length of 0.98km has been measured with a measurement accuracy of up to 0.5nm.