公开(公告)号：KR1020090024271A

公开(公告)日：2009-03-06

申请号：KR1020097001210

申请日：2007-06-15

Applicant: 코닝 인코포레이티드

Inventor： 크랍코,로스티슬라프알 ,  매튜,하젤비,Ⅲ

IPC: G02B6/00

CPC classification number: G02B6/02 ,  C03B37/01446 ,  C03B37/01453 ,  C03B37/01807 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2201/50 ,  C03B2203/26 ,  C03B2203/29 ,  C03C3/06 ,  C03C2201/11 ,  C03C2201/12 ,  C03C2201/50 ,  G02B6/02014 ,  G02B6/02266

Abstract: Disclosed is an optical fiber having a silica-based core comprising an alkali metal oxide selected from the group consisting of K2O, Na2O, LiO2, Rb2O, Cs2O and mixtures thereof in an average concentration in said core between about 50 and 500 ppm by weight, said core further comprising chlorine and fluorine, wherein the average concentration of fluorine in said core is greater than the average concentration of alkali metal oxide in said core and the average concentration of chlorine in said core is greater than the average concentration of alkali metal oxide in said core; and a silica-based cladding surrounding and directly adjacent the core. By appropriately selecting the concentration of alkali metal oxide dopant in the core and the cladding, a low loss optical fiber may be obtained.

Abstract translation: 公开了一种光纤，其具有二氧化硅基核，其包含选自K2O，Na2O，LiO2，Rb2O，Cs2O及其混合物的碱金属氧化物，其中所述芯中的平均浓度为约50至500重量ppm， 所述芯还包含氯和氟，其中所述芯中的氟的平均浓度大于所述芯中的碱金属氧化物的平均浓度，并且所述芯中的平均氯浓度大于碱金属氧化物的平均浓度 说核心; 以及围绕并直接邻近芯的二氧化硅基包层。 通过适当地选择芯和包层中的碱金属氧化物掺杂剂的浓度，可以获得低损耗光纤。