TRANSLUCENT MEMBER AND PACKAGE FOR OPTICAL COMMUNICATION USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide an inexpensive translucent member having physical, thermal, electrical and optical properties suitable as an electronic member material, an optical material and a machine part material, and an inexpensive package for optical communication using this. SOLUTION: The translucent member 10 comprises a Ta-containing borosilicate glass and shows a refractive index within±10% of that of sapphire and a flexural strength of >=130 MPa. The difference of coefficients of linear thermal expansion between the translucent member 10 and a metallic fixing member 31 brazed on this via a metallized layer 11 formed on the translucent member 10, is within±5%.