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Mechanism of Electron Radiation Induced Loss of the “Panda” Type Polarization-Maintaining Optical Fibers

  • Hai Liu
  • Hongbao Sun
Conference paper
Part of the Astrophysics and Space Science Proceedings book series (ASSSP, volume 47)

Abstract

Evolution and mechanism of the induced loss of the 1310 nm working-wavelength “Panda” type quartz PM fiber irradiated by the 1 MeV and 170 keV electrons respectively were experimentally investigated using electron accelerator. The results show that, fiber loss exhibits an exponential increase with increasing radiation fluence, which is higher under low-energy electrons than under high-energy electrons. The irradiated quartz fibers show an annealing effect. The restored loss of the fiber irradiated by high-energy electron is higher than that by low-energy electron. The radiation induced loss of quartz fiber has two mechanisms of Si–OH absorption and H2 absorption. Under lower electron energy, the energy deposition of fiber core is in majority leading to more radiation defects forming while the loss is mainly controlled by Si–OH. In the case of the fiber subjected to high-energy electron radiation, the absorbed dose of fiber core is relatively low, which is dominated by H2 absorption. Hydrogen that is involved in both mechanisms is generated by radiation induced degradation of polymer coating and diffuses into fiber core.

Keywords

Polarization-maintaining optical fiber Radiation effect Induced optical loss Infrared absorption Si–OH defect 

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Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  1. 1.School of Materials Science and EngineeringHarbin Institute of TechnologyHarbinPeople’s Republic of China

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