Method of fusing optical fibers within a splice package

G - Physics – 02 – B

Patent

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Details

G02B 6/255 (2006.01)

Patent

CA 2681936

The present invention relates to methods of connecting optical fibers. In a first aspect, the method proceeds by using a ferrule device having a passage adapted to apply radial pressure to optically align and hold in position opposed fiber ends, and fusing said fiber ends held by said ferrule device. In another aspect, the method of the present invention uses a ferrule device to optically align without mechanized adjustment and hold in position opposed fiber ends with a gap where said fiber ends meet, where the fibers have a temperature of fusion that is higher than a melting temperature of said ferrule device. The gap is large enough to reduce heat transfer from said fibers to said ferrule device so that a heat of fusion does not compromise said ferrule device and small enough that a heat of fusion does not cause said fiber ends to become misaligned and impair an optical coupling between said fiber ends. The method then transmits radiation directly onto said fiber ends without significant direct transmission onto said ferrule device to generate heat in said fiber ends and fuse said fiber ends held by said ferrule device.

La présente invention concerne des procédés de raccordement de fibres optiques. Selon un premier aspect, le procédé consiste à utiliser un dispositif formant ferrule ayant un passage adapté pour appliquer une pression radiale afin d'aligner de manière optique et de maintenir en position des extrémités de fibres opposées, puis à fusionner lesdites extrémités de fibres maintenues par ledit dispositif formant ferrule. Selon un autre aspect, le procédé de la présente invention utilise un dispositif formant ferrule afin d'aligner de manière optique sans ajustement mécanisé et de maintenir en position des extrémités de fibres opposées tout en conservant un espace dans lequel lesdites extrémités de fibres se rejoignent, les fibres ayant une température de fusion qui est supérieure à une température de fonte dudit dispositif formant ferrule. L'espace est suffisamment grand pour diminuer le transfert de chaleur desdites fibres audit dispositif formant ferrule, de sorte qu'une chaleur de fusion ne détériore pas ledit dispositif formant ferrule, et il est suffisamment petit pour qu'une chaleur de fusion ne provoque ni un désalignement desdites extrémités de fibres, ni une détérioration d'un couplage optique entre lesdites extrémités de fibres. Le procédé transmet ensuite un rayonnement directement sur lesdites extrémités de fibres, sans transmission directe significative sur ledit dispositif formant ferrule, de façon à générer de la chaleur dans lesdites extrémités de fibres et à fusionner lesdites extrémités de fibres maintenues par ledit dispositif formant ferrule.

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