High voltage insulator for optical fibers

G - Physics – 02 – B

Patent

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Details

G02B 6/44 (2006.01) G02B 6/00 (2006.01)

Patent

CA 2332525

A high voltage insulator for use with optical fibers includes an insulative support rod with at least one optical fiber wrapped about the support rod. The optical fiber and support rod are covered by an outer elastomeric skirted insulative sleeve which squeezes the optical fibers against the support rod. A dielectric sealant, such as a silicone gel, is dispersed along the optical fiber to fill any voids which occur adjacent the optical fiber, thereby providing a void-free bond between the interior surfaces of the insulator. The elastomeric outer sleeve provides a resilient barrier against the ingress of moisture. In a preferred embodiment, an inner layer of elastomeric material is provided between the support rod and the optical fiber to provide additional cushioning of the fiber and to reduce the size of voids which may occur adjacent the fiber.

On décrit un isolant à haute tension pour fibres optiques qui inclut une tige de support isolante autour de laquelle est enroulée au moins une fibre optique. La fibre optique et la tige de support sont recouvertes par une gaine isolante externe chemisée en élastomère qui presse les fibres optiques contre la tige de support. Un matériau d'étanchéité diélectrique, tel qu'un gel silicone, est dispersé le long de la fibre optique pour combler d'éventuels espaces vides adjacents à la fibre optique, ce qui crée une liaison hermétique entre les surfaces intérieures de l'isolant. La gaine externe en élastomère offre une barrière résiliente contre la pénétration de l'humidité. Dans une forme de réalisation préférée, une couche interne d'un matériau élastomérique est disposée entre la tige de support et la fibre optique pour créer un coussinage supplémentaire de la fibre, et pour réduire la taille d'éventuels espaces vides adjacents à la fibre.

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