Invention Grant
- Patent Title: Optical fiber preform, method for manufacturing thereof, and optical fiber obtained by drawing thereof
- Patent Title (中): 光纤预制件，其制造方法以及通过其制造得到的光纤
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Application No.: US11133193Application Date: 2005-05-20
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Publication No.: US07752869B2Publication Date: 2010-07-13
- Inventor: Tetsuya Otosaka , Dai Inoue , Hiroshi Oyamada , Jun Abe , Hideo Hirasawa
- Applicant: Tetsuya Otosaka , Dai Inoue , Hiroshi Oyamada , Jun Abe , Hideo Hirasawa
- Applicant Address: JP Chiyoda-ku, Tokyo
- Assignee: Shin-Etsu Chemical Co., Ltd.
- Current Assignee: Shin-Etsu Chemical Co., Ltd.
- Current Assignee Address: JP Chiyoda-ku, Tokyo
- Agency: McGinn IP Law Group, PLLC
- Priority: JP2002-230380 20020807
- Main IPC: C03B37/018
- IPC: C03B37/018
Abstract:
A method for manufacturing a preform having a core and a multilayer clad, includes covering a circumference of a rod including at least the core and an inner clad layer with a first tube including at least a high viscosity clad layer, and unifying the rod and the first tube by heating and contracting the first tube.
Public/Granted literature
- US20050229639A1 Optical fiber preform, method for manufacturing thereof, and optical fiber obtained by drawing thereof Public/Granted day:2005-10-20
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