Hussey, C.D., Birks, T.A., Wingfield, A.M., Niu, A., Kenny, R. and Dong, L.
Rectangular mode transformers in tapered single-mode fibres
Electronics Letters, 25, (21), . (doi:10.1049/el:19890947).
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A single-mode fibre, polished on both sides and subsequently tapered, yields a low-loss circular-to-rectangular mode transformer. This device should permit more efficient interconnection of circular fibres to rectangular integrated-optic and semiconductor waveguides.
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