Open AccessGamma-ray radiation response at 1550 nm of fluorine-doped radiation hard single-mode optical fiber
Author(s) -
Youngwoong Kim,
Seongmin Ju,
Sungho Jeong,
Seung Ho Lee,
WonTaek Han
Publication year - 2016
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.003910
Subject(s) - materials science , radiation , optics , optical fiber , attenuation , fiber , gamma ray , doping , optoelectronics , composite material , physics , astrophysics
We have investigated gamma-ray radiation response at 1550 nm of fluorine-doped radiation hard single-mode optical fiber. Radiation-induced attenuation (RIA) of the optical fiber was measured under intermittent gamma-ray irradiations with dose rate of ~10 kGy/h. No radiation hardening effect on the RIA by the gamma-ray pre-dose was found when the exposed fiber was bleached for long periods of time (27~47 days) at room-temperature. Photo-bleaching scheme upon 980 nm LD pumping has proven to be an effective deterrent to the RIA, particularly by suppressing the incipient RIA due to room-temperature unstable self-trapped hole defects (STHs). Large temperature dependence of the RIA of the optical fiber together with the photo-bleaching effect are worthy of note for reinforcing its radiation hard characteristics.