Title page for etd-0113114-163332


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URN etd-0113114-163332
Author Guang-Miao Huang
Author's Email Address No Public.
Statistics This thesis had been viewed 5354 times. Download 580 times.
Department Mechanical and Electro-Mechanical Engineering
Year 2013
Semester 1
Degree Ph.D.
Type of Document
Language zh-TW.Big5 Chinese
Title A Study of the Process Parameters in Grinding a Glass Fiber
Date of Defense 2014-01-23
Page Count 145
Keyword
  • Vision Assistant
  • Coordinate Transformation
  • Contact Point
  • Glass Fiber
  • Large Deflection of Cantilever Beam
  • Contact Force
  • Abstract The offset between the center lines of the polished end-face and the fiber core has a significant effect on coupling efficiency. When the offset is more than 0.6μm, the transmitted power drops by up to 50%. The initial contact point and the contact force are two of the most important parameters that induce the offset. This study proposes an image assistant method to find the initial contact point and a mathematical model to estimate the contact force when fabricating the double-variable-curvature end-face of single-mode glass fiber. The repeatability of finding the initial contact point via the vision assistant program is 0.3μm. Based on the assumption of a large deflection, a mathematical model is developed to study the relationship between the contact force and the displacement of the lapping film. In order to verify the feasibility of the mathematical model, a testing stand is established. Experiments, as well as DEFORM simulations, are carried out and the results are compared with those from the mathematical model developed in this study. The results show the same tendency, i.e., that the contact forces are proportional almost linearly to the feed amounts of the lapping film and the errors are less than 9%. By using the method developed in this study, the offset between the grinding end-face and the center line of the fiber core is within 0.17 to 0.31μm. This method is successfully applied to fabricate the double-variable-curvature end-face of single-mode glass fiber. The coupling efficiency is up to 88%.
    Advisory Committee
  • Jao-Hwa Kuang - chair
  • Ching-Kao Chang - co-chair
  • Zone-Ching Lin - co-chair
  • Innchyn Her - advisor
  • Ying-Chien Tsai - advisor
  • Files
  • etd-0113114-163332.pdf
  • Indicate in-campus at 1 year and off-campus access at 1 year.
    Date of Submission 2014-02-13

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