Oscillatory behaviour in Type IA FBG: Ruling out chemical complexity

Simpson, G; Kalli, K; Canning, J; Lacraz, A

Oscillatory behaviour in Type IA FBG: Ruling out chemical complexity

Simpson, G Kalli, K Canning, J

Lacraz, A

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Publication Type:: Conference Proceeding
Citation:: Proceedings of SPIE - The International Society for Optical Engineering, 2015, 9634
Issue Date:: 2015-01-01

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Field	Value	Language
dc.contributor.author	Simpson, G	en_US
dc.contributor.author	Kalli, K	en_US
dc.contributor.author	Canning, J https://orcid.org/0000-0001-8281-7783	en_US
dc.contributor.author	Lacraz, A	en_US
dc.date.issued	2015-01-01	en_US
dc.identifier.citation	Proceedings of SPIE - The International Society for Optical Engineering, 2015, 9634	en_US
dc.identifier.isbn	9781628418392	en_US
dc.identifier.issn	0277-786X	en_US
dc.identifier.uri	http://hdl.handle.net/10453/120079
dc.description.abstract	© 2015 SPIE. Type IA FBG are regenerated gratings that appear in hydrogenated germanosilicate fibre of all types during prolonged UV exposure. The gratings are characterised by a large Bragg wavelength shift and a concomitant increase in the mean fibre core index. Modulated index changes are complex by comparison and significantly weaker, often characterised by oscillatory growth behaviour. Low thermal stability of Type IA gratings suggests a possible chemical role similar to thermally processed optical fibres where autocatalysis has been observed. We show that GeOH and SiOH formation are not out-of-phase and follow each other, with no evidence of autocatalysis, ruling out a chemical origin.	en_US
dc.relation.ispartof	Proceedings of SPIE - The International Society for Optical Engineering	en_US
dc.relation.isbasedon	10.1117/12.2195101	en_US
dc.rights	info:eu-repo/semantics/openAccess
dc.title	Oscillatory behaviour in Type IA FBG: Ruling out chemical complexity	en_US
dc.type	Conference Proceeding
utslib.citation.volume	9634	en_US
utslib.for	0205 Optical Physics	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - GBDTC - Global Big Data Technologies
utslib.copyright.status	open_access	*
pubs.publication-status	Published	en_US
pubs.volume	9634	en_US

Abstract:

© 2015 SPIE. Type IA FBG are regenerated gratings that appear in hydrogenated germanosilicate fibre of all types during prolonged UV exposure. The gratings are characterised by a large Bragg wavelength shift and a concomitant increase in the mean fibre core index. Modulated index changes are complex by comparison and significantly weaker, often characterised by oscillatory growth behaviour. Low thermal stability of Type IA gratings suggests a possible chemical role similar to thermally processed optical fibres where autocatalysis has been observed. We show that GeOH and SiOH formation are not out-of-phase and follow each other, with no evidence of autocatalysis, ruling out a chemical origin.

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http://hdl.handle.net/10453/120079