| 摘要 |
<p>An optical communication device substrate made of ceramic or glass-ceramic having a negative thermal expansion coefficient in the range of -10 to -120 x 10<-7>/ DEG C in a temperature range of -40 to 100 DEG C, treated with a solution containing at least one organic silicon compound selected from the group consisting of siloxane compounds and silazane compounds. <IMAGE></p> |
