G - Physics – 02 – B
Patent
G - Physics
02
B
88/97
G02B 6/036 (2006.01) C03C 25/10 (2006.01) C03C 25/18 (2006.01) B29C 47/00 (2006.01)
Patent
CA 1269260
ABSTRACT OF THE DISCLOSURE A coated optical fiber comprising an optical fiber; a first layer of a thermoplastic rubber composition which is disposed around the circumference of the optical fiber, has a Young's modulus of 0.1 GPa or less, and is capable of extrusion coating; and a second layer of a thermoplastic resin composition which is disposed around the circumference of the first layer, has a linear expansion coefficient of 1 x 10-5°C-1 or less and a Young's modulus of 5 GPa or more, and is capable of extrusion coating. The optical fiber is coated simultaneously with the first and second layers immediately after the spinning of the optical fiber. An apparatus for fabricating the coated optical fiber has an extruding machine for extruding the thermoplastic rubber composition and the molecular- orientated thermoplastic resin composition; and a crosshead for simultaneously coating the optical fiber with the extruded thermoplastic rubber composition and molecular- orientated thermoplastic resin composition to form the first and second layer around the optical fiber. The coated optical fiber has excellent transmission characteristics at low and high temperatures and is inexpensive.
472241
Kimura Takao
Shuto Yoshito
Wagatsuma Makoto
Yamakawa Shinzo
Yamamoto Fumio
Nippon Telegraph & Telephone Corporation
R. William Wray & Associates
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