Title:
ノンゼロ分散シフト光ファイバ用光ファイバ母材の製法
Document Type and Number:
Japanese Patent JP3986842
Kind Code:
B2
Abstract:
A method for manufacturing an optical fiber preform using the MCVD method in which a portion of or the whole of the optical fiber preform is formed by depositing glass on the inner wall of the starting tube (14). The method comprises a first step of depositing glass on the inner wall of the starting tube (14) and collapsing the starting tube (14) so that a silica rod is formed; a second step of removing the starting tube (14) surrounding the silica rod or removing the starting tube (14) and a part of synthetic glass; and a third step of depositing glass on an outer periphery of the silica rod obtained in the second step. By setting the refractive index of the cladding (19) to be less than that of pure silica using the present method, an optical fiber having an extremely low transmission loss and desired chromatic dispersion and dispersion slope values may be obtained (optical fiber also claimed).
Inventors:
Shoichiro Matsuo
Shoji Tanigawa
Kuniharu Himeno
Koichi Harada
Shoji Tanigawa
Kuniharu Himeno
Koichi Harada
Application Number:
JP2002035656A
Publication Date:
October 03, 2007
Filing Date:
February 13, 2002
Export Citation:
Assignee:
Fujikura Ltd.
International Classes:
C03B37/014; G02B6/00; C03B37/012; C03B37/018; G02B6/02; G02B6/036
Domestic Patent References:
| JP4219338A | ||||
| JP5058662A |
Attorney, Agent or Firm:
Masatake Shiga
Tadashi Takahashi
Takashi Watanabe
Masakazu Aoyama
Tadashi Takahashi
Takashi Watanabe
Masakazu Aoyama