公开(公告)号：US20140050450A1

公开(公告)日：2014-02-20

申请号：US14067631

申请日：2013-10-30

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Nobuaki ORITA ,  Akihiro KANAO ,  Hideya MORIDAIRA

IPC: G02B6/02

CPC classification number: G02B6/02395 ,  C03B37/01211 ,  C03B37/01245 ,  C03B37/01257 ,  C03B37/01446 ,  C03B37/01453 ,  C03B37/0146 ,  C03B37/02754 ,  C03B37/02772 ,  C03B37/029 ,  C03B2201/04 ,  C03B2201/12 ,  C03B2203/22 ,  Y02P40/57

Abstract: A porous layer is formed by depositing a silica glass particle around a core rod. The porous layer is dehydrated. The dehydrated porous layer is sintered under a decreased pressure until the dehydrated porous layer becomes a translucent glass layer containing a closed pore. The translucent glass layer is vitrified under an ambient atmosphere including an inert gas other than a helium gas.

Abstract translation: 通过在芯棒周围沉积石英玻璃颗粒来形成多孔层。 多孔层脱水。 脱水多孔层在减压下烧结直到脱水多孔层成为含有闭孔的半透明玻璃层。 半透明玻璃层在包括氦气以外的惰性气体的环境气氛下被玻璃化。