Invention Grant
- Patent Title: Optical fiber preform, method of manufacturing optical fiber preform, and method of manufacturing optical fiber
- Patent Title (中): 光纤预制棒，光纤预制棒的制造方法以及制造光纤的方法
-
Application No.: US11288311Application Date: 2005-11-29
-
Publication No.: US08789393B2Publication Date: 2014-07-29
- Inventor: Nobuaki Orita , Akihiro Kanao , Hideya Moridaira
- Applicant: Nobuaki Orita , Akihiro Kanao , Hideya Moridaira
- Applicant Address: JP Tokyo
- Assignee: The Furukawa Electric Co., Ltd.
- Current Assignee: The Furukawa Electric Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2004-344588 20041129; JP2004-364929 20041216; JP2004-364930 20041216; JP2005-117310 20050414; JP2005-241301 20050823; JP2005-241302 20050823
- Main IPC: C03B37/018
- IPC: C03B37/018
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.
Public/Granted literature
Information query
