Title:
光ファイバ製造中にガラス・プリフォームを接合する方法
Document Type and Number:
Japanese Patent JP4040582
Kind Code:
B2
Abstract:
A method of assembling two optical fiber tube preforms end-to-end without negatively impacting the local glass chemistry at the joint. The ends of two tubes to be joined together are reverse-tapered by a grinding such that the outside portion of the tube walls extend further outward than the inner portions of the tube walls. Two tubes having such ends are briefly heated and brought together, and the reverse taper minimizes the size of the cross-sectional area of the tube portions to be joined. A minimal amount of heat that does not significantly impact the glass chemistry at the joint is applied to the outside of the tubes to effect a tack weld that joins the tubes. Once the tack weld is in place, additional heat in combination with a vacuum force can be applied to the tubes, which completes the sealing of the weld.
Inventors:
Joseph Patrick Fletcher Third
Thomas John Miller
Donovan Alfanso Guthrie
Thomas John Miller
Donovan Alfanso Guthrie
Application Number:
JP2004015290A
Publication Date:
January 30, 2008
Filing Date:
January 23, 2004
Export Citation:
Assignee:
Furukawa Electric North America, Inc.
International Classes:
C03B37/012; C03B37/14; C03B23/207; C03B37/027
Domestic Patent References:
| JP2000128559A | ||||
| JP53143342A | ||||
| JP2000327358A | ||||
| JP2001019459A |
Attorney, Agent or Firm:
Masao Okabe
Nobuaki Kato
Kazuo
Shinichi Usui
Ikuo Fujino
Takao Ochi
Teruhisa Motomiya
Norimichi Takanashi
Asahi Shinmitsu
Seiichiro Takahashi
Koji Yoshizawa
Nobuaki Kato
Kazuo
Shinichi Usui
Ikuo Fujino
Takao Ochi
Teruhisa Motomiya
Norimichi Takanashi
Asahi Shinmitsu
Seiichiro Takahashi
Koji Yoshizawa