Method for producing an optical coupler for extracting a...

Details Method for producing an optical coupler for extracting a... Method for producing an optical coupler for extracting a...

G - Physics

02

B

G02B 6/28 (2006.01) G02B 6/287 (2006.01)

Patent

CA 2386068

Fused optical coupler comprising a polarization maintaining fibre and a standard fibre. The cross section of the said standard fibre is smaller than the cross section of the polarization maintaining fibre in the area of fusion of the coupler. The internal forces in the coupling area are sufficiently low to provide an extinction ratio of more than 20 dB at the output of the polarization maintaining fibre.

L'invention se rapporte à un coupleur optique réalisé par fusion et comportant une fibre à maintien de polarisation et une fibre ordinaire. La section transversale de ladite fibre ordinaire est inférieure à la section transversale de la fibre à maintien de polarisation dans la zone de fusion du coupleur. Les forces internes qui s'exercent dans la zone de couplage sont suffisamment faibles pour produire un taux d'extinction supérieur à 20 dB au niveau de la sortie de la fibre de maintien de la polarisation.

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