Increase in insertion loss due to rotation between mating APC optical connectors with stepped ferrules
✍ Scribed by Mitsuo Takahashi
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 218 KB
- Volume
- 82
- Category
- Article
- ISSN
- 8756-663X
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✦ Synopsis
This paper describes angled-physical-contact (APC) optical connectors for SM optical fibers, each with a stepped ferrule that consists of a short cylindrical portion at its end portion forming an angled convex surface on the endface at a slanted angle of 8 or 12°. Since the insertion loss increases when one stepped ferrule rotates relative to the other in a connection, the parameters affecting the increase in insertion loss were analyzed based on studies of the angled convex surfaces of stepped ferrules in connections. From the above analysis, the theoretical expression of rotation allowing the elimination of an air gap on the mating optical fiber endfaces was obtained. The insertion loss was given in terms of the rotation between the mating stepped ferrules of the APC connectors, comparing the results of the theoretical analysis with experimental data.