Propagation characteristics of optical fibres
Propagation characteristics of optical fibres
A theoretical and experimental study has been made of propagation in multimode optical fibre. The fibre used in the experiments mainly consists of a capillary of ME1 glass filled with hexachlorobuta-1,3-diene. The main topics considered in this thesis are single-mode propagation and mode conversion effects due to bending, undulation and stress or strain. A measured pulse dispersion of less than 0.4ns/km has been achieved. A contributing factor is the high-loss cladding which results in a preferential mode filtering of higher-order modes so that the pulse dispersion for a beam of high launching angular width is reduced for a relatively small increase in attenuation. Pulse dispersion and mode conversion are not strong functions of bending and undulation of the fibre, but strongly depend on stress or strain.
The graded-index fibre has also been considered and its pulse dispersion is predicted to be half that of the pulse dispersion of the liquid-core fibre.
Matsumura, H.
1e8b76d6-6100-43c0-b411-6f9fe68671eb
January 1974
Matsumura, H.
1e8b76d6-6100-43c0-b411-6f9fe68671eb
Gambling, W.A.
70d15b3d-eaf7-44ed-9120-7ae47ba68324
Matsumura, H.
(1974)
Propagation characteristics of optical fibres.
University of Southampton, Department of Electronics, Doctoral Thesis, 167pp.
Record type:
Thesis
(Doctoral)
Abstract
A theoretical and experimental study has been made of propagation in multimode optical fibre. The fibre used in the experiments mainly consists of a capillary of ME1 glass filled with hexachlorobuta-1,3-diene. The main topics considered in this thesis are single-mode propagation and mode conversion effects due to bending, undulation and stress or strain. A measured pulse dispersion of less than 0.4ns/km has been achieved. A contributing factor is the high-loss cladding which results in a preferential mode filtering of higher-order modes so that the pulse dispersion for a beam of high launching angular width is reduced for a relatively small increase in attenuation. Pulse dispersion and mode conversion are not strong functions of bending and undulation of the fibre, but strongly depend on stress or strain.
The graded-index fibre has also been considered and its pulse dispersion is predicted to be half that of the pulse dispersion of the liquid-core fibre.
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Published date: January 1974
Organisations:
University of Southampton, Electronics & Computer Science
Identifiers
Local EPrints ID: 394752
URI: http://eprints.soton.ac.uk/id/eprint/394752
PURE UUID: 8cb25568-37c7-403b-9dc6-023eb0443435
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Date deposited: 29 Jun 2016 16:07
Last modified: 15 Mar 2024 00:32
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Contributors
Author:
H. Matsumura
Thesis advisor:
W.A. Gambling
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