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Time- and Temperature-Dependent Material Behavior and its Impact on Low-Temperature Performance of Fiber Optic Cables

Published online by Cambridge University Press:  10 February 2011

Osman S. Gebizlioglu
Osman S. Gebizlioglu*
Affiliation:
Bellcore Fiber Media & Components Group 445 South Street, Room #MCC 1A-140B Morristow, New Jersey 07960
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Abstract

A series of service-affecting field failures in cold weather (−40°C to 0°C) initially and in more moderate conditions (up to 15° C) recently have raised concerns about the temperaturedependent transmission performance of loose tube fiber optic cables. The first field failures occurred in 1550-nm aerial transmission lines while more recent failures have affected 1310-nm operations. Field analyses and laboratory temperature-cycling measurements of the affected cables established that the transmission loss resulted from fiber microbending due to random fiber contacts with the buffer tube walls caused by the axial shrinkage of the buffer tubes relative to the cable central member. High resolution thermal expansion/contraction measurements on commonly used PBT (Polybutylene Terephthalate) and PP (Polypropylene) buffer tubes indicated that the total axial shrinkage consists of two components: irreversible shrinkage due to the relaxation of processing-induced stresses and reversible thermal contraction/expansion. The magnitude of both components depends strongly on the buffer tube material and the processing conditions used to manufacture buffer tubes. In this report, we review our work to date in developing field installation and cable design solutions, present a comparison of two buffer tube materials, identify key materials issues that determine buffer tube dimensional stability, and discuss the implications of these issues on the field installation and cable design solutions that we have developed to minimize the risk of low-temperature transmission loss in loose tube cables.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 531: Symposium DD – Reliabilty of Photonics Materials & Structures , 1998 , 333
Copyright
Copyright © Materials Research Society 1998

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References

1. Kiss, G.D., “Self-Healing Failures in the Aerial Plant,” SPIE Proceedings, (1993).10.1117/12.168635Google Scholar
2. Kiss, G.D., Zammit, M., Gebizlioglu, O.S., Grimado, P.B., Hlavaty, M.J., Wieczorek, C.J., “Low-Temperature Reversible Splice Loss Accompanied by Cable CM Protrusion,” NFOEC Proceedings, Vol.2, 411 (1994).Google Scholar
3. Gebizlioglu, O.S., Kiss, G.D., Zammit, M.J., Grimado, P.B., Cascio, C., Karl, G. “An Investigation of Temperature-Induced Cable Loss,” NFOEC Proceedings, Vol.2, 479 (1995).Google Scholar
4. Grimado, P.B., Gebizlioglu, O.S., Zammit, M.J., Kiss, G.D., “Low-Temperature Transmission Loss in Loose Tube Fiber Optic Cables,” SPIE Proceedings, Vol. 2290, 29 (1994).10.1117/12.187431Google Scholar
5. Zammit, M.J., Gebizlioglu, O.S., Grimado, P.B., Kiss, G.D., “Properties of Loose Tube Optical Cables Contributing to Low-Temperature Optical Loss,” IWCS Proceedings, Vol.43, 538 (1994).Google Scholar
6. Gebizlioglu, O.S., Grimado, P.B., Kiss, G.D., Zammit, M.J, “Low-Temperature Performance of Loose Tube Fiber Optic Cables,” SPIE Proc., Vol. 2611, 189 (1995).10.1117/12.230109Google Scholar
7. Struik, D.J., Differential Geometry, Addison-Wesley, Reading, Massachusetts (1950).Google Scholar