Method of producing optical-fiber coupler

Details Method of producing optical-fiber coupler Method of producing optical-fiber coupler

G - Physics

02

B

G02B 6/255 (2006.01) C03B 23/20 (2006.01) G02B 6/28 (2006.01)

Patent

CA 2061516

The invention provides a method for producing an optical-fiber coupler with a preset branching ratio. The present invention relates to a method in which part of a plurality of optical fibers are made to closely contact with each other so as to form a coupler. The coupler is heated to thereby obtain a predetermined branching ratio; the flow rate of a gas to be supplied to a heat source is increased/decreased by a quantity proportional to a difference between the drawing speed and a preset drawing speed while predetermined tension is applied to the optical fibers.

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