Process for producing hard plastic clad optical fiber with improved ultraviolet transmission
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United States of America Patent
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Apr 20, 1993
Grant Date -
N/A
app pub date -
Apr 2, 1992
filing date -
Apr 2, 1992
priority date (Note) -
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Abstract
The present invention is directed to a process for producing hard clad optical fibers with improved ultraviolet transmission which includes drawing an optical fiber core while simultaneously coating the core with a photoinitiator-free, active energy ray curable composition and then introducing the coated core to a high energy ionizing radiation ray source so as to minimize exposure of the core to the ionizing radiation. The energy is less than 800 keV and preferably less than 200 keV. In one preferred embodiment, the energy is aimed at the coated core so as to pass therethrough at an angle of 45.degree. or less. The resulting product from the process is also included in the present invention.
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