公开(公告)号：KR850000245B1

公开(公告)日：1985-03-12

申请号：KR810002513

申请日：1981-07-11

Applicant: AGENCY IND SCIENCE TECHN

Inventor： SAKURAGI SHIRO ,  KOTANI HARUO

IPC: G02B6/00 ,  A47J27/62 ,  G02B6/02

公开(公告)号：KR850000246B1

公开(公告)日：1985-03-12

申请号：KR840005986

申请日：1984-09-28

Applicant: AGENCY IND SCIENCE TECHN

Inventor： SAKURAGI SHIRO ,  KOTANI HARUO

IPC: G02B6/00 ,  A47J27/62 ,  G02B6/02

公开(公告)号：DE3101999A1

公开(公告)日：1981-11-26

申请号：DE3101999

申请日：1981-01-22

Applicant: AGENCY IND SCIENCE TECHN

Inventor： SAKURAGI SHIRO ,  KOTANI HARUO

IPC: A61B18/20 ,  B29C47/00 ,  C03B23/049 ,  C03B37/012 ,  C03B37/023 ,  C03B37/027 ,  C03C13/04 ,  G02B6/00 ,  G02B6/02 ,  G02B6/10 ,  G02B5/14

Abstract: A preform is prepared to comprise a step index structure consisting of a core and a clad both made of metal halogenides or arsenic-selenium glass sparingly capable of transmitting infrared light of long wavelength and a layer of lubricant applied to the outer surface of the clad. The preform is set inside a metal cylinder. By pulling this metal cylinder through a plurality of dies containing orifices of successively decreased diameters at a temperature below the melting point, the preform can be elongated into an optical fiber of a prescribed diameter. The optical fiber thus produced is capable of transmitting infrared light of high power with a small loss. Protected and reinforced by the metal cylinder jacket, this fiber enjoys high mechanical strength.

公开(公告)号：DE3225453A1

公开(公告)日：1983-01-27

申请号：DE3225453

申请日：1982-07-07

Applicant: AGENCY IND SCIENCE TECHN

Inventor： SAKURAGI SHIRO ,  SAITOH MITSUNORI ,  KOTANI HARUO ,  IMAGAWA KYOSHIRO

IPC: A61B18/20 ,  B23K26/08 ,  G02B6/02 ,  G02B6/38 ,  G02B6/42 ,  G02B6/44 ,  G02B5/16

Abstract: A mechanism for cooling optical fibers which include optical fibers, metal netting wound around the fibers to conduct heat therefrom, and a sheath in which the fibers and netting are inserted. In accordance with one embodiment, the sheath and netting are spaced from each other so as to permit cooling air to flow therebetween to cool the fibers. In another embodiment, the netting is connected to a cooler by a heat connected element so that heat in the fibers is drawn to the cooler through the heat conductive element to cool the fibers.