Surface fictive temperature of silica optical fibers

Minoru Tomozawa; YongKeun Lee

doi:10.1117/12.372763

29 December 1999 Surface fictive temperature of silica optical fibers

Minoru Tomozawa, YongKeun Lee

Proceedings Volume 3848, Optical Fiber Reliability and Testing; (1999) https://doi.org/10.1117/12.372763
Event: Photonics East '99, 1999, Boston, MA, United States

Abstract

Fictive temperatures of an optical fiber surface were measured using IR reflection spectroscopy with a microscope attachment. The measurement was possible because the IR peak wavenumber of the silica structural band exhibited a good correlation with the fictive temperature of silica glasses. The fictive temperature of the silica optical fiber surface was extremely high, higher than that of the interior of the fiber by several hundred degree(s)C. On the other hand, during the fiber drawing, the temperature difference between the surface and interior of the fiber is estimated to be small, approximately 10 degree(s)C, and the difference in cooling rate between the fiber surface and interior is considered negligible. The observed high fictive temperature of the fiber surface was attributed to the high tensile stress of the surface layer during the fiber drawing.

Citation Download Citation

Minoru Tomozawa and YongKeun Lee "Surface fictive temperature of silica optical fibers", Proc. SPIE 3848, Optical Fiber Reliability and Testing, (29 December 1999); https://doi.org/10.1117/12.372763

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