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Effect of Mechanical Stripping and Arc-Fusion on the Strength and Aging of a Spliced Recoated Optical Fiber

Published online by Cambridge University Press:  10 February 2011

T. Volotinen ,
M. Zimnol ,
M. Tomozawa ,
Y.-K. Lee  and
K. Raine
T. Volotinen
Affiliation:
OFCON Optical Fiber Consultants AB, Kolonivägen 12, 82450 Hudiksvall, Sweden
M. Zimnol
Affiliation:
Ericsson Cables AB, Landsvägen 66v, 17287 Sundbyberg, Sweden
M. Tomozawa
Affiliation:
Rensselear Polytechnic Institute, Troy, NY 12180-3590, USA
Y.-K. Lee
Affiliation:
Rensselear Polytechnic Institute, Troy, NY 12180-3590, USA
K. Raine
Affiliation:
National Physical Laboratory, Teddington, Middlesex, TWII 0LW, UK
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Abstract

Median strength 4 GPa and Weibull slope 5 were obtained after stripping the coating from fibers with a mechanical stripping technique. However, the median strength was found to decrease to 1.6 GPa following fusion splicing. Most of the fractures in a tensile test occurred at a distance of 1 mm from the splice point. The internal axial tensile stress in the fiber cladding was found to be removed over a 2 mm section over the splice point. The surface fictive temperature was found to be decreased only at the zones where the fibers fracture. The reason for the fiber weakening during fusion is therefore thought to be due to the intrinsic structural changes in the silica indicated by the fictive temperature decrease. The magnitude of the decrease can be reduced by using a quicker fusion process. The corrosion velocity around a fusion splice point during aging in hot tap water was found to be significantly higher than along the fiber elsewhere. Silica layers with a thickness of hundreds nanometers were removed uniformly. However, the weakest points (roughest surface) after water aging were located in the ends of the recoated section.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 531: Symposium DD – Reliabilty of Photonics Materials & Structures , 1998 , 163
Copyright
Copyright © Materials Research Society 1998

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