Elimination of photoinduced absorption in Ge-doped silica fibres by annealing of ultraviolet colour centres


  • Albert, Jacques
  • Malo, B.
  • Johnson, D. C.
  • Bilodeau, F.
  • Hill, K. O.




Heating standard telecommunication Ge-doped silica fibres to 1200 degrees C removes the ultraviolet absorption bands believed to be responsible for photosensitivity. Losses at 480 nm induced by exposure to 249 nm laser light are reduced from 30 dB/m to less than 0.8 dB/m in the annealed fibre.



Peer Review: 

Published in Peer Reviewed Journal

Faculty Name: 

Faculty of Engineering and Design

Department Name: 

Department of Electronics

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