Translator Disclaimer
28 September 1994 Low-temperature transmission loss in loose tube fiber optic cables
Author Affiliations +
Large optical losses in singlemode fibers have been reported in loose tube fiber optic cables exposed to extremely low temperatures (-20 degree(s)C to -40 degree(s)C). These losses have occurred predominantly at 1550 nm (although some transmission systems at 1310 nm have also been affected) in aerial cables and were confined to the cable section adjacent to a splice closure. Optical transmission measurements on commercial fiber optic cables that were subjected to temperature cycling in an environmental chamber indicated that thermal contraction of buffer tubes at low temperature was the major contributor to fiber bending-induced loss. While the buffer tube thermal shrinkage occurs, optical fibers contained in the tube undergo nearly zero contraction. Consequently, the fibers buckle against the buffer tube inner wall, causing bending-induced losses. Cables with an initially low fiber excess length-to-buffer tube inner diameter ratio, and strong buffer tube-to-central member coupling exhibit minimal loss. It has been demonstrated in the laboratory that the low-temperature optical loss can be suppressed by effective coupling of the cable sheath to the central member.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Philip B. Grimado, Osman S. Gebizlioglu, M. J. Zammit, and Gabor D. Kiss "Low-temperature transmission loss in loose tube fiber optic cables", Proc. SPIE 2290, Fiber Optic Materials and Components, (28 September 1994);


The manufacturing of polarization optical fibres
Proceedings of SPIE (December 28 2007)
Low-temperature performance of loose tube fiber optic cables
Proceedings of SPIE (January 15 1996)
The use of BOTDR to evaluate the thermal effects on...
Proceedings of SPIE (November 26 2007)
Measurement of fiber strain in optical cables
Proceedings of SPIE (March 01 1994)
Technology of soft-glass optical fiber capillaries
Proceedings of SPIE (October 12 2006)

Back to Top