Fabrication of a gradient refractive index preform using laminar shear mixing

Jin Sung Choi, Sang Hyuk Im, Min Young Song, O. Ok Park, Hansol Cho, Jin Taek Hwang

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


A gradient refractive index rod was successfully prepared by a new fabrication method using laminar shear mixing, and a graded index polymer optical fiber that satisfied IEEE1394b was obtained from the method. To fabricate the gradient refractive index rod, a liquid monomer mixture with a relatively low refractive index was placed in a prepared cylindrical glass reactor and a transparent polymer rod with a higher refractive index was introduced at the center of the reactor. The reactor and the polymer rod were then rotated concurrently with a small rotating speed difference to generate a Couette flow in the liquid phase. The centrifugal force generated by rotation and the polymer diffusion into the liquid monomer mixture developed a graded concentration profile in a radial direction. The Couette flow could reduce the concentration fluctuation in a tangential direction. In addition, the graded index profile could be controlled by the copolymer composition of the rod and its diameter.

Original languageEnglish
Pages (from-to)1100-1104
Number of pages5
JournalJournal of Applied Polymer Science
Issue number5
Publication statusPublished - 2005 Mar 5
Externally publishedYes


  • Centrifugal force
  • Diffusion
  • Gradient refractive index
  • Laminar shear mixing
  • Polymer optical fibers

ASJC Scopus subject areas

  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry


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