Method for producing optical fibre precast product, optical fibre precast product and relative optical fibre

The invention relates to the field of optical fibres, to optical-fibre preforms and to processes for producing a final optical-fibre preform obtained by plasma built-up on a primary preform. The invention relates especially to a final optical-fibre preform comprising a primary preform (3) comprising...

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Bibliographische Detailangaben
Hauptverfasser:	HERCHUELZ VIRGINIE, DECAUX ISABELLE
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CHEMISTRY ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY GLASS MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES METALLURGY MINERAL OR SLAG WOOL OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHYSICS TRANSMISSION
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Beschreibung
Zusammenfassung:	The invention relates to the field of optical fibres, to optical-fibre preforms and to processes for producing a final optical-fibre preform obtained by plasma built-up on a primary preform. The invention relates especially to a final optical-fibre preform comprising a primary preform (3) comprising optical core and cladding material, obtained by a VAD deposition process or an OVD deposition process, a silica sleeve tube (4) surrounding the primary preform (3), and a built-up layer (5) made of silica particles surrounding the silica sleeve tube (4).