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Transport Processes Governing the Drawing of a Hollow Optical Fiber

[+] Author Affiliations
Jing Yang, Yogesh Jaluria

Rutgers-The State University of New Jersey, Piscataway, NJ

Paper No. HT2008-56124, pp. 695-704; 10 pages
doi:10.1115/HT2008-56124
From:
  • ASME 2008 Heat Transfer Summer Conference collocated with the Fluids Engineering, Energy Sustainability, and 3rd Energy Nanotechnology Conferences
  • Heat Transfer: Volume 1
  • Jacksonville, Florida, USA, August 10–14, 2008
  • Conference Sponsors: Heat Transfer Division
  • ISBN: 978-0-7918-4847-0 | eISBN: 0-7918-3832-3
  • Copyright © 2008 by ASME

abstract

This paper presents a mathematical model to simulate the silica hollow optical fiber drawing process. Two neck-down profiles, which represent the inner and outer surfaces of the hollow fiber, are generated by using an iterative numerical scheme. The zonal method is applied to calculate the radiative transport within the glass. The effects of variable properties for air and buoyancy are investigated and results indicate that these can be neglected for simulating the draw process. The validation of the model is carried out by comparing the results with those obtained by using the optical thick method as well as those for a solid-core fiber. The effect of drawing parameters like the temperature of the furnace, feeding speed and drawing speed on the temperature and velocity distributions and on the draw tension are studied. It is found that the geometry and qualities of the final hollow optical fiber are highly dependent on the drawing parameters, especially the drawing temperature and the feeding speed.

Copyright © 2008 by ASME

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