用氟代硼掺杂到光纤中也可使纤维的折射率降低,並能改善纤维的性质。掺氟用化合物要求沸程在0°～100℃范围,适合此沸程的氟化合物很少。提出通过代入重卤素到碳硅硫的氟化物中的方法来获得适宜的掺杂用化合物,並对这些化合物在制备上进行了探讨。最后讨论了它们在掺杂过程中所发生的反应。 Fluoroboron doping into the fiber also reduces the refractive index of the fiber and improves the properties of the fiber. Fluorine compounds require boiling range 0 ° ~ 100 ℃ range, suitable for this boiling range of fluorine compounds rarely. It has been proposed to obtain suitable doping compounds by substituting heavy halogen into the fluorocarbons of carbon, silicon and sulfur, and the preparation of these compounds is discussed. Finally, the reactions that occur during the doping process are discussed.