Method of making fiber optic couplers

Details Method of making fiber optic couplers Method of making fiber optic couplers

1994-07-27

1996-06-04

Ngo, John

Optical waveguides

With optical coupler

Permanently fixed coupler

385 96, 385 99, 65408, 65409, 65411, G02B 626

Patent

active

055241581

ABSTRACT:
Overclad fiber optic couplers typically include an elongated glass body having a solid midregion through which at least two glass optical fibers extend in optical signal coupling relationship. At each end of the midregion is an end region containing a bore from which optical fiber pigtails extend. In accordance with the invention, each end region includes a first projecting portion, one surface of which forms a ledge. That end of each bore opposite the midregion terminates at a recessed face that intersects the respective ledge. One end of at least the first fiber extends from the first bore. That portion of the first fiber outside the first bore has a coating that extends along the ledge, the coating terminating outside the first bore. A mass of glue extends between the ledge and the recessed face and encompasses the bare portion of the first fiber that extends along the first ledge and at least a portion of the first coating that extends along the first ledge. A method of making the coupler is also disclosed.

REFERENCES:
patent: 4902324 (1990-02-01), Miller et al.
patent: 5015062 (1991-05-01), Finzel
patent: 5251276 (1993-10-01), Berkey et al.
patent: 5261018 (1993-11-01), Suganuma et al.
patent: 5274724 (1993-12-01), Brehm et al.
patent: 5305404 (1994-04-01), Robson

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