The influence of hydrogen loading and the fabrication process on the mechanical strength of optical fibre Bragg gratings.

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dc.contributor.author Wei, C. Y. -
dc.contributor.author Ye, Chen-Chun -
dc.contributor.author James, Stephen W. -
dc.contributor.author Tatam, Ralph P. -
dc.contributor.author Irving, Phil E. -
dc.date.accessioned 2011-09-08T09:55:23Z
dc.date.available 2011-09-08T09:55:23Z
dc.date.issued 2002-11-01T00:00:00Z -
dc.identifier.citation C. Y. Wei, C. C. Ye, S. W. James, R. P. Tatam and P. E. Irving, The influence of hydrogen loading and the fabrication process on the mechanical strength of optical fibre Bragg gratings, Optical Materials, Volume 20, Issue 4, November-December 2002, Pages 241-251. -
dc.identifier.issn 0925-3467 -
dc.identifier.uri http://dx.doi.org/10.1016/S0925-3467(02)00069-1 -
dc.identifier.uri http://dspace.lib.cranfield.ac.uk/handle/1826/1381
dc.description.abstract This paper investigates the influence of hydrogen loading and other stages of the fabrication process on the mechanical strength of fibre Bragg gratings. Following UV irradiation, tensile tests were carried out on Ge–B codoped photosensitive fibres with and without hydrogen loading. Fibre Bragg gratings (FBGs) were written using a range of UV wavelengths, namely 246, 255 and 266 nm. The tensile strength of the optical fibres was determined in their as-received status and following the various stages of FBG fabrication. The mechanical strength was assessed using Weibull statistics. The results indicate that the strength of FBGs is influenced by the UV irradiation parameters and by the hydrogen-loading process. FBGs fabricated using shorter UV wavelengths and low pulse power intensity exhibit a high mechanical strength. The FBGs written in hydrogen loaded fibres have less than 50% of the strength of FBGs that have not been hydrogen loaded. Fibre fracture morphology observed by scanning electron microscope reveals fracture mechanisms of FBGs, which are correlated with the structural change of the silica fibres induced during the FBG inscription process. Combined with surface information gathered by atomic force microscopy, fracture mechanics is applied to understand the mechanisms of strength degradation caused by the FBG inscription proces en_UK
dc.language.iso en_UK -
dc.publisher Elsevier Science B.V., Amsterdam. en_UK
dc.subject Fibre Bragg grating strength en_UK
dc.subject Hydrogen loaded optical fibre en_UK
dc.subject Bragg grating formation mechanisms en_UK
dc.subject Mechanical resistance of fibre Bragg gratings en_UK
dc.title The influence of hydrogen loading and the fabrication process on the mechanical strength of optical fibre Bragg gratings. en_UK
dc.type Article -


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