公开(公告)号：US5655046A

公开(公告)日：1997-08-05

申请号：US570769

申请日：1995-12-12

申请人： Shin-ichi Todoroki ,  Shigeki Sakaguchi

发明人： Shin-ichi Todoroki ,  Shigeki Sakaguchi

IPC分类号： C03C13/04 ,  G02B6/02 ,  G02B6/10 ,  G02B6/00

CPC分类号： C03C13/046 ,  G02B6/02 ,  G02B6/102

摘要： A glass composition comprises an oxyfluoride glass comprising silicon, a divalent metal, a monovalent metal, oxygen, and fluorine, satisfying requirements: (1) the silicon is present in an amount of 40% or more and 75% or less based on total number of cations; (2) the divalent metal is present in an amount of 30% or less based on total number of cations; (3) the monovalent metal is present in an amount of 18% ore more and 60% or less based on total number of cations; and (4) the fluorine is present in an amount of below 20% based on total amount of anions. An optical fiber comprises a clad made of the glass composition and a core made of a silicate glass comprising silicon dioxide, a divalent metal compound, and a monovalent metal compound in which (9) the clad glass contains more SiO.sub.2 than the core or (10) the clad glass contains fluoride(s) of the divalent metal and/or the monovalent metal.

摘要翻译： 玻璃组合物包含含有硅，二​​价金属，一价金属，氧和氟的氟氧化物玻璃，满足要求：（1）基于总数，硅的含量为40％以上且75％以下 的阳离子; （2）二价金属以基于阳离子总数的30％以下的量存在; （3）基于阳离子总数，单价金属的存在量为18％以上，60％以下。 和（4）基于阴离子的总量，氟以低于20％的量存在。 光纤包括由玻璃组合物制成的包层和由包含二氧化硅，二价金属化合物和一价金属化合物的硅酸盐玻璃制成的芯，其中（9）包覆玻璃含有比芯更多的SiO 2或（10 ）复合玻璃中含有二价金属和/或一价金属的氟化物。