Method of making an optical fiber communication system

Details Method of making an optical fiber communication system Method of making an optical fiber communication system

1992-08-27

1993-09-07

Lee, John D.

Optical waveguides

With splice

Fusion splicing

385 97, G02B 638

Patent

active

052436748

ABSTRACT:
Fusion splicing of optical fiber generally requires removal of a polymer coating from the end portions of two lengths of fiber. A conventional removal method involves immersion of the fiber ends in an appropriate polymer stripping liquid, e.g., in hot, concentrated sulfuric acid. It is known that the strength of fusion splices generally is statistically distributed, such that there exists a probability that a given splice will pass at a given proof test level. We have found that the splice strength distribution can be shifted towards higher strength if the polymer stripping liquid comprises means for insuring that the liquid is essentially free of strength-reducing particles. Preferred means are concentrated nitric acid. Exemplarily, the liquid is at a temperature in the range 170.degree.-200.degree. C. and comprises concentrated (about 95%) sulfuric acid and about 5% b.v. concentrated (about 70%) nitric acid.

REFERENCES:
patent: 4957343 (1990-09-01), Sato et al.
patent: 5018824 (1991-05-01), Ooe et al.
patent: 5026135 (1991-06-01), Booth
"Optical Fiber Splices and Connectors", by C. M. Miller, M. Dekker, Inc., pp. 282-293, 1986.

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