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Title: Gallium lanthanum sulphide based glasses for mid-infrared optical fibres
Author: Brady, Dominic Joseph
ISNI:       0000 0001 3476 3864
Awarding Body: University of Southampton
Current Institution: University of Southampton
Date of Award: 1999
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Gallium lanthanum sulphide (GLS) based glasses and optical fibres have considerable potential for use in both active and passive infrared applications. These range from using it as a passive transmission medium in the mid-infrared, to a host material for mid-infrared fibre lasers. This is potentially useful for all optical gas detection systems. The purification, thermal and optical properties, and fibre drawing of GLS based optical fibre forms the content of this thesis. A successful scheme of purification of the precursors, and optimisation of the composition of the glass, has allowed the fabrication of the lowest loss GLS fibre reported to date with a loss of 1 dBm−1 at 4μm. The development of a novel preform fabrication technique for producing single mode fibres has greatly enhanced the prospects of this material for the future.
Supervisor: Hewak, Daniel Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available
Keywords: TK Electrical engineering. Electronics Nuclear engineering