Large effective area single mode optical waveguide

H - Electricity – 04 – B

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H04B 10/18 (2006.01) G02B 6/036 (2006.01)

Patent

CA 2246445

A single mode optical waveguide fiber having a core refractive index profile of at least four segments (26, 28, 30, 36, 38, 40, 42) is disclosed. The main features of the core design are at least two non-adjacent core profile segments (26, 30, 36, 40) have positive .DELTA. %; are, at least two non- adjacent segments (28, 32, 38, 42) have negative .DELTA. %. The novel waveguide core design provides a single mode waveguide which is suitable for high rate, long regenerator spacing systems which incorporate optical amplifiers. The waveguide core structure also lends itself to the manufacture of dispersion managed waveguide fiber.

Fibre guide d'ondes optique monomode dont le coeur présente un profil d'indice de réfraction composé d'au moins quatre segments. Les caractéristiques principales de la conception du coeur sont qu'au moins deux segments non contigus dudit profil ont un .DELTA. % positif, et qu'au moins deux segments non contigus ont un .DELTA. % négatif. Cette nouvelle conception du coeur du guide d'ondes permet d'obtenir un guide d'ondes monomode utilisable dans les systèmes à débit élevé dans lesquels la distance entre les régénérateurs est importante et qui incorporent des amplificateurs optiques. Cette structure du coeur du guide d'ondes se prête également à la fabrication de fibres guides d'ondes à dispersion régulée.

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