FERRULE FOR OPTICAL FIBER CONNECTORS

摘要

In order to provide a ferrule for an optical-fiber connector used for good organization of an optical communication network, the ferrule for an optical-fiber connector is made of a crystallized glass having a composition which consists essentially of, by weight percent, 60-70 % of SiO2, 16-25 % of Al2O3, 1.5-3 % of Li2O, 0.5-2.5 % of MgO, 1.3-4.5 % of TiO2, 0.5-3 % of ZrO2, 2-6.5 % of TiO2+ZrO2, 1-5.5 % of K2O, 0-7 % of ZnO, and 0-3 % of BaO. The crystallized glass includes 30-70 volume % precipitation of beta -spodumene solid solution or beta -quartz solid solution having an average grain size not greater than 2 mu m. In addition, the crystallized glass has a bend strength of 200 MPa or more and a thermal expansion coefficient of -10 SIMILAR 50x10<-7>/ DEG C at a temperature between -50 and 150 DEG C. <IMAGE>