Patent Number: 6,400,884

Title: Material for temperature compensation, and optical communication device

Abstract: A temperature compensating member which comprises a polycrystalline body containing, as a main crystal, one of .beta.-quartz solid solution and .beta.-eucryptite solid solution, and it has a value less than 3.52 .ANG. as an interplanar spacing of the crystal planes giving a main peak in X-ray diffraction measurement, and has a negative coefficient of thermal expansion.

Inventors: Matano; Takahiro (Echi-gun, JP), Sakamoto; Akihiko (Koka-gun, JP)

Assignee: Nippon Electric Glass Co., Ltd.

International Classification: C03C 10/00 (20060101); G02B 6/36 (20060101); G02B 006/00 ()

Expiration Date: 06/04/2019