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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received November 24, 2001
Accepted March 18, 2002

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fabrication of a Graded-index Polymer Optical Fiber Preform by Using a Centrifugal Force

Sang Hyuk Im Duck Jong Suh O Ok Park^† Hansol Cho¹ Jin Sung Choi¹ Jae Keun Park¹ Jin Taek Hwang¹

Center for Advanced Functional Polymers, Department of Chemical Engineering, Korea Advanced Institute of Science and Technology, 373-1, Kusong-Dong, Yusong-Gu,Daejeon 305-701, Korea ¹E-Polymer Laboratory, Samsung Advanced Institute of Technology, 103-6, Moonji-Dong, Yusong-Gu, Daejeon 305-380, Korea

oopark@kaist.ac.kr

Korean Journal of Chemical Engineering, May 2002, 19(3), 505-509(5), 10.1007/BF02697164

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Abstract

We have investigated a fabricating method for a graded index polymer optical fiber preform using a centrifugal force. When two monomers with different densities and refractive indices are polymerized under a centrifugal force, a concentration gradient is generated due to their density difference. Therefore, a graded refractive index can be obtained according to the concentration gradient. When a monomer is polymerized under a centrifugal force, a preform with a hollow is obtained because of volume shrinkage. To compensate for this practically, additional monomer_x000D_ should be filled into the hollow. Monomer should be fed to obtain a continuous gradient of refractive index at the interface before the first polymerized product is perfectly glassified. Two different types of feeding additional monomer were experimented with: monomer-monomer pair (case I) and monomer-polymer pair (case II). The graded index profile with a proper Δn (about 0.01) was successfully obtained in either case.

Keywords

Graded Index Polymer Optical Fiber Preform Centrifugal Force Volume Shrinkage

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