Excess Signal Loss In Precision-Wound Optical Fiber

Paul B. Buffin; C. C. Sung

doi:10.1117/12.940454

6 November 1987 Excess Signal Loss In Precision-Wound Optical Fiber

Paul B. Buffin, C. C. Sung

Proceedings Volume 0776, Metrology of Optoelectronic Systems; (1987) https://doi.org/10.1117/12.940454
Event: 1987 Technical Symposium Southeast on Optics, Electro-Optics, and Sensors, 1987, Orlando, FL, United States

Abstract

Signal loss in a precision-wound parabolic-index multimode optical fiber is investigated using an Optical Time Domain Reflectometer (OTDR). A fiber winding apparatus is designed and built for the production of precision-wound fiber optic bobbins to undergo signal loss measurements. The acquired signal loss data are analyzed and it is noted that high excess loss exist in freshly-wound fiber. The data reveal that a proper heat conditioning of the wound fiber greatly reduces the enormous initial loss. It is believed that the reduction in excess signal loss is due to stress relaxation throughout the fiber pack. It is obvious that the bending stresses at the crossover sites cannot be reduced through a heat conditioning process. The subject of fiber crossovers in precision-wound optical fibers is studied in terms of the winding tension. A theoretical model is developed for the radial stress distribution (in terms of the winding tension) and the results compared with the experimental data.

Citation Download Citation

Paul B. Buffin and C. C. Sung "Excess Signal Loss In Precision-Wound Optical Fiber", Proc. SPIE 0776, Metrology of Optoelectronic Systems, (6 November 1987); https://doi.org/10.1117/12.940454

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