Abstract
Our paper reports the investigation of the irradiation induced UV optical attenuation in commercially available, large diameter (200 - 600 um) optical fibers subjected to gamma irradiation. The measurements were carried out in situ using two types of gamma sources: a ^<60>Co source and the gamma-rays obtained through the deceleration of an electron beam incident on a tungsten target. In the first case, the maximum total dose was 29.26 kGy, while in the second one the total irradiation dose reached 8.5 kGy The experiments refer both to samples irradiated at room temperature and to samples heated up to 240 ℃. The paper compares the irradiation results for six types of optical fibers, having Al or Polyimide jacket.
