Title:
MANUFACTURE OF OPTICAL FIBER MADE OF SILVER HALIDE
Document Type and Number:
Japanese Patent JPS5945993
Kind Code:
A
Abstract:
PURPOSE:To manufacture an optical fiber made of a silver halide single crystal having high transmission characteristics, by pulling the single crystal from molten silver halide keeping the atmosphere at the pulling zone to a halogen-containing atmosphere and shielding from the radiation of ultraviolet ray and visible light. CONSTITUTION:Silver halide 2 is put into the crucible 1, and molten by the high- frequency heating coil 3. The halogen gas of the same kind as the halogen of the silver halide 2 or a mixture of the gas with an inert gas, is introduced into the shield pipe 4 through the halogen gas introducing pipe 6. The cylindrical seed crystal made of the single crystal of silver halide of the same kind as the silver halide in the crucible 2 is dipped in the molten silver halide 2 from the shaper 8 and pulled up slowly to form a continuous optical fiber 9 made of the single crystal of silver halide through the shaper 8. The formed optical fiber 9 is taken out through the shield pipe 4 and the light-shielding box 7 by the take- off device.
Inventors:
SHIODA TAKAO
CHIGIRA SADAO
CHIGIRA SADAO
Application Number:
JP15129282A
Publication Date:
March 15, 1984
Filing Date:
August 31, 1982
Export Citation:
Assignee:
FUJIKURA LTD
International Classes:
C30B15/00; C30B29/12; G02B6/00; (IPC1-7): C30B15/22; C30B29/10; G02B5/14
Attorney, Agent or Firm:
Masatake Shiga
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