UV tuning of coupling in twin-core optical fibres |
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| Authors: | Atkins G.R. Arkwright J.W. Hewlett S.J. |
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| Affiliation: | Opt. Fibre Technol. Centre, Sydney Univ., NSW; |
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| Abstract: | The isolation of a wavelength-demultiplexing twin-core fibre with nominally identical cores is improved from 7 dB to 26 dB by increasing the refractive index of one core. Tuning relaxes the fabrication tolerances necessary for ⩾20 dB isolation between channels, enhancing the feasibility of using twin-cure fibres for demultiplexing 1.3 and 1.55 μm signals in communications systems |
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