Method for forming joined section of optical branch fibers produ

Details Method for forming joined section of optical branch fibers produ Method for forming joined section of optical branch fibers produ

1990-02-28

1991-04-30

Lindsay, Robert L.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

65 421, 65 43, 156166, 156296, 156441, 350 9615, D04H 308, G02B 626, G02B 514

Patent

active

050115570

ABSTRACT:
The present invention is drawn to a method for forming a section in which a plurality of optical branch fibers are joined with each other. The branch fibers are connected with a single optical trunk fiber at the end faces thereof contacting each other. The configuration and area of the end face of the joined section of branch fibers are substantially identical to those of the end face of the trunk fiber. A die has a through-hole, for shaping the branch fibers, the sectional area and configuration of which are equal to those of the end face of the trunk fiber as taken perpendicular to the axis thereof. The branch fibers supplied to the heated die at a predetermined amount ratio are simultaneously drawn through the die. The ratio between amounts of respective branch fibers to be supplied to the die is set to correspond with a desired signal branching ratio of the optical coupler to be obtained.

REFERENCES:
patent: 3905852 (1975-09-01), Mukai et al.
patent: 4632513 (1986-12-01), Stowe et al.
patent: 4668264 (1987-05-01), Dyott
patent: 4820366 (1989-04-01), Beever et al.

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