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Metal coating enhancement of optical fiber distributed radiation sensors based on optical frequency domain reflectometry technology

机译：Metal coating enhancement of optical fiber distributed radiation sensors based on optical frequency domain reflectometry technology

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摘要

This study aimed to investigate the use of metal coatings for enhancing the radiation sensitivity of optical fibers. Monte Carlo simulations were conducted for a preliminary study of the enhancement effects of different metals and thicknesses on radiation sensitivity. The enhancement effect on radiation sensitivity was further verified by through an accelerator irradiation experiment. In this study, optical frequency domain reflectometry (OFDR) technology was used to determine changes in the radiation sensitivity of the optical fibers. The results show that the attenuation of the optical fiber with a lead metal coating was approximately-three times higher than that without a coating. Acceptable agreement was obtained between the simulation and experimental results. In conclusion, using lead-metal coating reduced the detection limit of the optical fiber dosimetry by 66.

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