Other

Hirokazu Takeuchi

Ryo Nagase

Akihiko Sakamoto

Seiko Mitachi

Yoshiaki Takeuchi

Takashi Tanabe

Masayuki Ninomiya

Katsumi Inada

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 SiO,, 16-25% of Al,O,, 1.5-3% of Li,O, 0.5-2.5% of MgO, 1.3-4.5% of TiO,, 0.5-3% of ZrO,, 2-6.5% of TiO,&plus;ZrO,, 1-5.5% of K,O, 0-7% of ZnO, and 0-3% of BaO. The crystallized glass includes 30-70 volume % precipitation of &bgr;-spodumene solid solution or &bgr;-quartz solid solution having an average grain size not greater than 2 &mgr;m. In addition, the crystallized glass has a bend strength of 200 MPa or more and a thermal expansion coefficient of &minus;10&tilde;50&times;10,/&deg; C. at a temperature between &minus;50 and 150&deg; C.

Ferrule for optical-fiber connector

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Shiga, Japan

Hirokazu Takeuchi