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Direct and inverse design of microstructured optical fibres

Direct and inverse design of microstructured optical fibres
Direct and inverse design of microstructured optical fibres
Microstructured optical fibres, where an arrangement of air holes running longitudinally along the fibre guides light in either a solid or a hollow core, have created new opportunities in diverse areas of science and technology. Applications range from the generation of supercontinuum light to optical sensing, nonlinear telecom devices and the generation and delivery of extremely high optical powers. Photonic bandgap fibres, allowing light guidance in a hollow core, are also extensively studied. The main issues preventing accurate simulations of the properties of fabricated fibres are identified and addressed. An ideal, accurate representation of a realistic fibre is then proposed and employed to obtain fundamental scaling rules and to study the interactions between air guided and surface guided modes. Anticrossings between these modes in slightly asymmetric structures are identified as the cause for the unusual polarisation effects experimentally observed in these fibres. And finally, guidelines for fabricating fibres with the widest possible operational bandwidth possible are developed and presented.
Poletti, Francesco
9adcef99-5558-4644-96d7-ce24b5897491
Poletti, Francesco
9adcef99-5558-4644-96d7-ce24b5897491

Poletti, Francesco (2007) Direct and inverse design of microstructured optical fibres. University of Southampton, Optoelectronic Research Center, Doctoral Thesis, 239pp.

Record type: Thesis (Doctoral)

Abstract

Microstructured optical fibres, where an arrangement of air holes running longitudinally along the fibre guides light in either a solid or a hollow core, have created new opportunities in diverse areas of science and technology. Applications range from the generation of supercontinuum light to optical sensing, nonlinear telecom devices and the generation and delivery of extremely high optical powers. Photonic bandgap fibres, allowing light guidance in a hollow core, are also extensively studied. The main issues preventing accurate simulations of the properties of fabricated fibres are identified and addressed. An ideal, accurate representation of a realistic fibre is then proposed and employed to obtain fundamental scaling rules and to study the interactions between air guided and surface guided modes. Anticrossings between these modes in slightly asymmetric structures are identified as the cause for the unusual polarisation effects experimentally observed in these fibres. And finally, guidelines for fabricating fibres with the widest possible operational bandwidth possible are developed and presented.

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More information

Published date: May 2007
Organisations: University of Southampton

Identifiers

Local EPrints ID: 47759
URI: http://eprints.soton.ac.uk/id/eprint/47759
PURE UUID: b94eb155-389f-49c5-a314-9e484e3b9ef8
ORCID for Francesco Poletti: ORCID iD orcid.org/0000-0002-1000-3083

Catalogue record

Date deposited: 14 Aug 2007
Last modified: 14 Mar 2019 01:40

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