Abstract
In order to explain the contradictory results on the temperature dependence of
the radiation-induced attenuation (RIA) in optical fiber, the temperature dependence of
color center absorption was proposed as a complementary explanation. The temperature
tests were conducted on the four prototype optical fibers after irradiation. During the
temperature tests the RIA in the fibers at the near infrared (NIR) wavelengths was
measured continuously. The temperature dependence of color center absorption was
verified. The competition between the thermally color center annealing and the
temperature-dependent absorption of color center was observed. The test results show
that the temperature dependent absorption of the color center at NIR wavelengths is an
important factor influencing the temperature dependence of RIA besides the thermally
driven color center generation, conversion and annealing process.
© 2012 IEEE
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