Method for fabricating star coupler for interconnecting optical

Details Method for fabricating star coupler for interconnecting optical Method for fabricating star coupler for interconnecting optical

1994-08-30

1995-09-26

Lee, John D.

Optical waveguides

With optical coupler

Particular coupling structure

385 43, 385 51, G02B 6255

Patent

active

054540577

ABSTRACT:
A star coupler for interconnecting optical fibers to distribute optical signals. The method for fabricating the star coupler comprises the steps of preparing a tubular member and first and second groups of optical fibers having bare fiber portions extending from the ends. The bared fiber portions of the first and second groups of optical fibers are inserted into the tubular member, in the opposite directions, in an end-to-end abutting relationship. The contacting ends of the bared fiber portions are then molten and fused together. The fused fiber portions are finally stretched together with the tubular member. It is possible to preheat the tubular member at a relatively low temperature so that the tubular member shrinks relative to the bared fiber portions to retain the latter. The obtained star coupler comprises first and second groups of optical fibers inserted into a tubular member in an end-to-end abutment relationship, with the ends joined together. The tubular member has an inner surface in a generally polygonal shape.

REFERENCES:
patent: 4008061 (1977-02-01), Ramsay
patent: 4360248 (1982-11-01), Bickel et al.
patent: 4801185 (1989-01-01), Bricheno
patent: 4869570 (1989-09-01), Yokohama et al.
patent: 5129021 (1992-07-01), Mortimore et al.
patent: 5309536 (1994-05-01), Suganuma et al.

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