Method for fabricating a preform for a plastic optical fiber and the preform for a plastic optical fiber fabricated thereby
申请人:SAMSUNG ELECTRONICS CO., LTD.
公开号:EP1116577A2
公开(公告)日:2001-07-18
The present invention relates to a method for fabricating a preform for a plastic optical fiber and a preform fabricated thereby. Particularly, the present invention provides a new method for fabricating a preform for a plastic optical fiber, having continuous refractive index profile in a radial direction, comprising the following steps:
(a) introducing a mixture consisting of at least two substances, having a different density and refractive index each other to a cylindrical reactor and polymerizing the mixture in a centrifugal field generated by revolving the reactor;
(b) compensating a vacancy formed on account of a volume shrinkage caused by polymerization in the said step (a) with a mixture consisting of at least two substances, having a different density and refractive index each other, and polymerizing the mixture in a centrifugal field generated by revolving the reactor; and
(c) repeating the step(b) until a vacancy is not formed after polymerization.
本发明涉及一种制造塑料光纤预型件的方法和由此制造的预型件。特别是,本发明提供了一种用于制造塑料光纤预型件的新方法,该预型件在径向具有连续的折射率轮廓,包括以下步骤:
(a) 将至少由两种密度和折射率不同的物质组成的混合物引入圆柱形反应器,并在反应器旋转产生的离心场中使混合物聚合;
(b) 用由至少两种密度和折射率不同的物质组成的混合物补偿因上述步骤(a)中聚合引起的体积收缩而形成的空位,并在反应器旋转产生的离心场中聚合该混合物;以及
(c) 重复步骤(b),直到聚合后不形成空位。