The University of Southampton
University of Southampton Institutional Repository

A theoretical study into the fundamental design limits of devices based on one-and two-dimensional structured fibres

A theoretical study into the fundamental design limits of devices based on one-and two-dimensional structured fibres
A theoretical study into the fundamental design limits of devices based on one-and two-dimensional structured fibres
The sub-wavelength perturbation of an originally uniform material in order to manipulate light is the basis of two of the latest key technologies used to produce optical fibre devices for telecommunication system applications. The first technology (fibre Bragg gratings) concerns the 1-dimensional perturbation of the refractive index of an optical fibre (i.e. along the propagation axis of the fibre), whereas the second technology (microstructured optical fibres) concerns a 2-dimensional perturbation of the refractive index (i.e. in the transverse plane of the fibre).Regarding the fibre Bragg gratings, the effect of background losses on uniform gratings and of cladding mode losses on linearly chirped gratings have been studied by means of two extended versions of coupled-mode theory. The possibility of compensating the cladding mode losses acting on the chirped grating profile is also analysed. Considering the microstructured optical fibres, an extensive study of highly nonlinear, small-core, silica holey fibres has been performed with the implementation of the multipole method, which was chosen after a careful consideration of other available modelling techniques. Guidelines were produced for optimising the design of holey fibres for particular device applications especially when trade-offs between small effective mode area and low con­finement loss are important. The work on modelling highly nonlinear holey fibres was extended to include a preliminary study of the use of higher refractive index glasses and their future device applications.
University of Southampton
Finazzi, V.
bcd436d6-27e8-45c2-8dab-4e32d547498b
Finazzi, V.
bcd436d6-27e8-45c2-8dab-4e32d547498b

Finazzi, V. (2003) A theoretical study into the fundamental design limits of devices based on one-and two-dimensional structured fibres. University of Southampton, Optoelectronic Research Center, Doctoral Thesis.

Record type: Thesis (Doctoral)

Abstract

The sub-wavelength perturbation of an originally uniform material in order to manipulate light is the basis of two of the latest key technologies used to produce optical fibre devices for telecommunication system applications. The first technology (fibre Bragg gratings) concerns the 1-dimensional perturbation of the refractive index of an optical fibre (i.e. along the propagation axis of the fibre), whereas the second technology (microstructured optical fibres) concerns a 2-dimensional perturbation of the refractive index (i.e. in the transverse plane of the fibre).Regarding the fibre Bragg gratings, the effect of background losses on uniform gratings and of cladding mode losses on linearly chirped gratings have been studied by means of two extended versions of coupled-mode theory. The possibility of compensating the cladding mode losses acting on the chirped grating profile is also analysed. Considering the microstructured optical fibres, an extensive study of highly nonlinear, small-core, silica holey fibres has been performed with the implementation of the multipole method, which was chosen after a careful consideration of other available modelling techniques. Guidelines were produced for optimising the design of holey fibres for particular device applications especially when trade-offs between small effective mode area and low con­finement loss are important. The work on modelling highly nonlinear holey fibres was extended to include a preliminary study of the use of higher refractive index glasses and their future device applications.

Text
Finazzi_2003_thesis_1930T.pdf - Author's Original
Available under License University of Southampton Thesis Licence.
Download (10MB)

More information

Published date: 2003
Organisations: University of Southampton

Identifiers

Local EPrints ID: 46106
URI: http://eprints.soton.ac.uk/id/eprint/46106
PURE UUID: 9f4f662e-af0b-4638-b390-996f3e0debbc

Catalogue record

Date deposited: 23 May 2007
Last modified: 15 Mar 2024 09:17

Export record

Contributors

Author: V. Finazzi

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×