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Conferences > CLEO > 1999 > CWF > CWF69
  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 1999),
  • paper CWF69

Investigation of H2 in- and out-diffusion impact on long-period grating devices

Y. Liu, L. Zhang, W. Zhang, J.A.R. Williams, and I. Bennion

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Abstract

H2-loading is an established technique to photosensitise fibres for fabricating short-period (fibre Bragg gratings—FBGs) and long-period gratings (LPGs). However, the H2-diffusion effect on the spectral response is far more significant in LPGs than in FBGs (reported previously). For a systematical investigation we have assessed this effect in LPGs for H2 in- and out-diffusion at high- and low-pressures with long and short photosensitising time lengths.

© 1999 Optical Society of America

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