The Furukawa Electric Co., Ltd.

Kiyoshi Arima

Takashi Suzuki

Hirokazu Sato

Katsuhiko Watanabe

Yoshiharu Taga

Yuta Aoki

Masahide Kuwabara

Yasuhiro Naka

Hiroaki Itoh

Sadayuki Toda

Yukio Kohmura

Shinpei Todo

Hiroyuki Wada

Tatsuya Taniguchi

A method of drawing an optical fiber in which a glass optical fiber is drawn while fusing by heating and pulling by a pulling mechanism one end of an optical fiber preform made of glass, includes drawing the glass optical fiber from the one end of the optical fiber preform while controlling a drawing speed to make an external diameter of the glass optical fiber larger than an external diameter of a product-to-be glass-optical fiber to be used to manufacture a product. The method includes adjusting an external diameter of the glass optical fiber to an external diameter passable through a die for forming a coating. The method also includes arranging the die around the glass optical fiber having the external diameter passable through the die.

Method of processing glass optical fiber and method of drawing optical fiber

A method of processing an optical fiber includes introducing fiber that has passed a pulling mechanism to a shredding unit with an introducing unit. The introducing unit includes a movable unit including a notch configured to fit with a capstan roller included in the pulling mechanism, a sliding mechanism that attaches the movable unit slidably with respect to a main body of the introducing unit, and a restoring mechanism configured to restore the movable unit to an initial position when the movable unit has slid. The method includes shredding the fiber introduced by the introducing unit into fiber pieces, and suctioning, carrying, and collecting the fiber pieces. A method of drawing an optical fiber includes drawing the fiber while controlling a drawing speed, adjusting a diameter of the fiber to a diameter passable through a die, and arranging the die around the fiber having the diameter passable through the die.

Apparatus for and method of processing glass optical fiber, method of manufacturing and method of drawing optical fiber

A cleaning method comprises first cleaning which includes supplying a cleaning-liquid to the coloring device from the optical fiber passing hole of the nipple and the ink supply opening, and discharging the cleaning-liquid from the cleaning-liquid discharge opening, and second cleaning which includes supplying a cleaning-liquid to the coloring device from the optical fiber passing hole of the nipple and the ink supply opening, and discharging the cleaning-liquid from the optical fiber passing hole of the second die.

Cleaning method of coloring device of optical fiber, and coloring device of optical fiber

An apparatus includes: an introducer to introduce a glass optical fiber that has passed a pulling mechanism pulling, to draw the glass optical fiber, one end of an optical fiber preform that has been fused by heating; a shredder including a casing connected to the introducer and a shredding mechanism to shred the glass optical fiber introduced by the introducer in the casing into glass optical-fiber pieces; a pipe connected to the casing of the shredder and to carry the glass optical-fiber pieces; and a suction unit connected to the pipe and to suction the glass optical-fiber pieces via the pipe.

An apparatus for manufacturing an optical fiber soot, which comprises a core partition having an opening portion at core burner side provided on a periphery of a core burner, in a reactor of the apparatus to be used in a conventional VAD method.

Apparatus for manufacturing an optical fiber soot, and method for manufacturing an optical fiber soot using thereof

An end heating and processing method of an optical fiber preform. In this method, an optical fiber preform is processed by heating and melting an end of a vitrified optical fiber preform including a core portion and a cladding portion formed on an outer circumference thereof to process the end having a shape for drawing as an optical fiber.

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Tokyo, Japan

Kiyoshi Arima