Title :
Investigation of H/sub 2/ in- and out-diffusion impact on long-period grating devices
Author :
Liu, Y. ; Zhang, L. ; Zhang, W. ; Williams, J.A.R. ; Bennion, I.
Author_Institution :
Div. of Electron. Eng. & Comput. Sci., Aston Univ., Birmingham, UK
Abstract :
Summary form only given. H/sub 2/-loading is an established technique to photosensitise fibres for fabricating short-period (fibre Bragg gratings FBGs) and long-period gratings (LPGs). However, the H/sub 2/-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 H/sub 2/ in- and out-diffusion at high- and low-pressures with long and short photosensitising time lengths.
Keywords :
Bragg gratings; diffusion; hydrogen; optical fibre fabrication; optical fibre testing; H/sub 2/; H/sub 2/-diffusion; H/sub 2/-loading; fibre Bragg gratings; fibres; high-pressures diffusion; in-diffusion; long-period grating devices; long-period gratings; low-pressure diffusion; out-diffusion; photosensitising time lengths; spectral response; systematic investigation; Bragg gratings; Capacitive sensors; Elasticity; Fiber gratings; Light sources; Monitoring; Optical fiber devices; Resonance; Telecommunications; Wavelength measurement;
Conference_Titel :
Lasers and Electro-Optics, 1999. CLEO '99. Summaries of Papers Presented at the Conference on
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
1-55752-595-1
DOI :
10.1109/CLEO.1999.834213
