Method for fabricating a preform for a plastic optical fiber and a preform for a plastic optical fiber fabricated thereby
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United States of America Patent
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Aug 6, 2002
Grant Date -
Oct 4, 2001
app pub date -
Jan 10, 2001
filing date -
Jan 11, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for fabricating a preform for a plastic optical fiber, having continuous refractive index profile in a radial direction, comprising a firs step of introducing a mixture consisting of at least two substances, each having a different density and refractive index relative to each other, to a cylindrical reactor and polymerizing the mixture in a centrifugal field generated by rotating the reactor; a second step of compensating for a void formed by volume shrinkage from the polymerization in the first step with a mixture consisting of at least two substances, each having a different density and refractive index relative to each other, and polymerizing the mixture in a centrifugal field generated by rotating the reactor, and a third step of repeating the second step until there is no void after polymerization
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