Method of manufacturing an optical module for wavelength divisio

Details Method of manufacturing an optical module for wavelength divisio Method of manufacturing an optical module for wavelength divisio

1994-04-29

1996-03-05

Simmons, David A.

Glass manufacturing

Processes of manufacturing fibers, filaments, or preforms

With measuring, controlling, sensing, programming, timing,...

65411, 65381, 385 42, 385 43, G02B 6255, C03B 3707

Patent

active

054963907

ABSTRACT:
A method of manufacturing an optical module for wavelength-division multiplex optical transmission, which module comprises a first optical fiber having a first port at its one end and a second and a third optical fiber fused to the first optical fiber at its side face such that the first optical fiber is positioned in the center between the second and third optical fibers. The manufacturing method comprises a first step of regulating the aspect ratio at the fused portion while heating the fused portion and elongating the fused portion at zero speed or a very low speed and a second step of regulating the coupling length of the fused portion while elongating the fused portion at a higher speed than in the aspect ratio regulating step under the conditions of the heating temperature of the fused portion lowered and the aspect ratio kept unchanged.

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