Signal transmitting cable

G - Physics – 02 – B

Patent

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G02B 6/44 (2006.01)

Patent

CA 2495090

A cable (302) has (8) fibres (304) are encapsulated by a UV curable layer (306) having a diameter of approximately (1010) microns, and (16) outer fibres (316) arranged in a circular formation around the inner fibres (304). The optical fibres (304) are held in position by means of the UV curable layer (306) so that the UV curable material of the layer (306) does not penetrate into the gaps between the optical fibres (304) and the outermost optical fibres (304) are restrained by the layer from moving axially. It is found that such an arrangement provides surprisingly favourable bending properties, making the cable particularly suitable for installation in a tube by means of blowing.

L'invention concerne un câble (302) présentant huit fibres (304) encapsulées dans une couche (306) durcissable par UV, présentant un diamètre de 1010 microns environ, et 16 fibres extérieures (316) agencées en configuration circulaire autour des fibres intérieures (304). Les fibres optiques (304) sont maintenues en position au moyen de la couche (306) durcissable par UV, de sorte que la matière durcissable par UV de la couche (306) ne pénètre pas dans les trous situés entre les fibres optiques (304), et que les fibres optiques les plus à l'extérieur (304) sont restreintes dans leur déplacement axial par ladite couche. Il s'avère, de manière surprenante, qu'un tel arrangement permet d'obtenir de bonnes propriétés de flexion, ce qui permet au câble d'être particulièrement approprié à une installation dans un tube, par soufflage.

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