Abstract
This work aims to find out the gel time that may not cause damage to the physical properties of the polymer optic fiber (POF). Effect of gel time of vinylester resin on signal attenuation of POF was studied. The resin gel time was controlled by mixing different ratios of Methylethylketone peroxide (MEKP), Cobalt Naphthenate-6 %, and Dimethylaniline at 18 °C. OTDR was used to measure backscattering level and signal loss during the resin curing process. Optical imaging was conducted on POF cross section before and after resin treatment to investigate the effect of resin gel time on its physical properties. Results showed that POF signal was affected by resin gel time. Increasing gel time caused drop of the backscattering level of the POF. It was found that 15 minutes gel time had no significant effect on POF signal integrity. Gel time 45 minutes or longer cause severe physical damage to the POF.
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