随着单模光纤在通信网络中的推广应用,精确测定光纤的零色散波长变得日益重要。目前的测量方法是:(1)干涉测量法;(2)用几只不同波长的脉冲激光器测量与波长有关的群迟延变化。若采用前种方法,由于条纹清晰度随光纤长度的增加而下降,因而,难于测准长度超过数米 With the popularization and application of single-mode fiber in communication networks, it is increasingly important to accurately measure the zero-dispersion wavelength of optical fiber. The current measurement methods are: (1) Interferometry; (2) Wavelength-dependent group delay variations measured with several pulsed lasers of different wavelengths. If the former method is used, the sharpness of the stripe decreases with the increase of the length of the optical fiber, so that it is difficult to calibrate the length of more than a few meters