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Method for producing an optical coupler for extracting a signal from a polarization maintaining optical fibre, and corresponding coupler
Method for producing an optical coupler for extracting a signal from a polarization maintaining optical fibre, and corresponding coupler
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机译:生产用于从保偏光纤中提取信号的光耦合器的方法以及相应的耦合器
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摘要
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.
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