公开(公告)号：US07058270B2

公开(公告)日：2006-06-06

申请号：US10515574

申请日：2002-06-27

申请人： Hwa Joong Kim ,  Hae Woog Choi ,  Se Lee Chang ,  Dae Sung Lee ,  Jung Hyun Oh ,  Eu Gene Kim

发明人： Hwa Joong Kim ,  Hae Woog Choi ,  Se Lee Chang ,  Dae Sung Lee ,  Jung Hyun Oh ,  Eu Gene Kim

IPC分类号： G02B6/02 ,  G02B6/28

CPC分类号： G02B6/02038 ,  B29D11/00721

摘要： The present invention relates to a method for preparing a GI (graded index) plastic optical fiber preform having a radial refractive index gradient, the refractive index increasing gradually from the outer periphery of the preform toward the center thereof, comprising inserting a 1st plastic tube (inside diameter: d1i, outside diameter: d1o) (111) made of a first polymer (refractive index: n1) in a cylinder reactor (inside diameter: d0i, d1o≦d0i) and inserting a 2nd plastic tube (inside diameter: d2i, outside diameter d2o, d2o≦d1i) (112) made of a second polymer (refractive index: n2, n2≧n1) in the 1st plastic tube, the reactor, the 1st and 2nd plastic tubes are positioned coaxially, injecting a precursor of a third polymer (refractive index: n′, n′≧n2) into the 2nd plastic tube, injecting a precursor of a fourth polymer (refractive index: n″, n1≦n″≦n2) into the space between the 1st and 2nd plastic tubes.

摘要翻译： 本发明涉及一种制备具有径向折射率梯度的GI（渐变折射率）塑料光纤预制件的方法，折射率从预成型坯的外周向其中心逐渐增加，包括插入第一塑料管（ 内径：由第一聚合物（111）制成的外径：d <1 （折射率：n <1）在气缸反应器中（内径：d 并且插入第二塑料管（内径：d 外径d ，其中，d 2 （112）由第二聚合物（折射率：n 2，n 2，N 2）= n 1 在第一塑料管中，反应器，第一和第二塑料管同轴地定位，注入第三聚合物的前体（折射率 ：n'，n'> = n <2>）插入第二塑料管中，注入第四聚合物的前体（折射率：n“，n <1 < N“<= N <2>）进入第一和第二塑料管之间的空间。