Novel optical fibres and their applications
Novel optical fibres and their applications
This thesis presents the development of spun elliptically birefringent fibres and metal/glass composite fibres for polarisation control fibre devices. The fabrication technique, theoretical analysis and characteristics of the fibres as well as their resulting devices are described. A large improvement in the performance of existing fibre devices has been achieved with these new optical fibres which have also led to the fabrication of new fibre devices and the discovery of the electric-field poling effect in silica optical fibres. The design and fabrication of spun elliptically-birefringent fibres has resulted in the demonstration of miniature, environmentally-stable and rugged fibre current sensors. In contrast to conventional fibres, they can be wound in multi-turn coils of small diameter, resulting in a high current sensitivity. A theoretical analysis of the fibre and various sensor configurations has been made. Experimental measurements on the current sensitivity as well as mechanical and temperature stabilities of the device are presented. Exposed-core fibres offer smooth, continuous and well-controlled field-access surfaces for evanescent-field interactions. As a result, miniature metal/glass fibre polarisers with high differential modal attenuations and low insertion losses over a wide spectral range have been demonstrated. Measurement techniques, devices characteristics and limiting factors are described. The design of the fibres with internal electrodes has led to the demonstration of the first electro-optic fibre modulator. Moreover, novel electric-field poling phenomenon has been observed. Uniform and periodic permanent second-order nonlinear susceptibilities have been generated. Their application to linear electro-optic modulators and efficient second-harmonic generation is described.
University of Southampton
Li, Luksun
6579b8ee-cb81-4543-b9f8-7d8654560fa7
1989
Li, Luksun
6579b8ee-cb81-4543-b9f8-7d8654560fa7
Li, Luksun
(1989)
Novel optical fibres and their applications.
University of Southampton, Doctoral Thesis.
Record type:
Thesis
(Doctoral)
Abstract
This thesis presents the development of spun elliptically birefringent fibres and metal/glass composite fibres for polarisation control fibre devices. The fabrication technique, theoretical analysis and characteristics of the fibres as well as their resulting devices are described. A large improvement in the performance of existing fibre devices has been achieved with these new optical fibres which have also led to the fabrication of new fibre devices and the discovery of the electric-field poling effect in silica optical fibres. The design and fabrication of spun elliptically-birefringent fibres has resulted in the demonstration of miniature, environmentally-stable and rugged fibre current sensors. In contrast to conventional fibres, they can be wound in multi-turn coils of small diameter, resulting in a high current sensitivity. A theoretical analysis of the fibre and various sensor configurations has been made. Experimental measurements on the current sensitivity as well as mechanical and temperature stabilities of the device are presented. Exposed-core fibres offer smooth, continuous and well-controlled field-access surfaces for evanescent-field interactions. As a result, miniature metal/glass fibre polarisers with high differential modal attenuations and low insertion losses over a wide spectral range have been demonstrated. Measurement techniques, devices characteristics and limiting factors are described. The design of the fibres with internal electrodes has led to the demonstration of the first electro-optic fibre modulator. Moreover, novel electric-field poling phenomenon has been observed. Uniform and periodic permanent second-order nonlinear susceptibilities have been generated. Their application to linear electro-optic modulators and efficient second-harmonic generation is described.
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Published date: 1989
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Local EPrints ID: 461191
URI: http://eprints.soton.ac.uk/id/eprint/461191
PURE UUID: 5dd7cd0c-a7f1-4569-aa54-2d37bab1a50f
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Date deposited: 04 Jul 2022 18:38
Last modified: 04 Jul 2022 18:38
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Author:
Luksun Li
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