Abstract
MCF design strongly impacts the fiber optical properties, cross-talk and radiative leakage-loss contributing to increased transmission-loss. A systematic study is presented of the impact of MCF optical properties, cross-talk, transmission-loss and splice-loss on transmission system SNR. Different trench/ moat assisted core-designs having effective area of 80μm2 and 112μm2 are evaluated in 1x2 MCF design for different inter-core distance, with the impact of cross-talk, radiative leakage loss and propagation configuration (bidirectional (counterpropagating)/ copropagating) studied on transmission SNR. Sensitivity of any increased average splice-loss because of multiple cores on the SNR has also been calculated and reported. It is predicted that the maximum SNR for the case of copropagating and bidirectional propagation occurs at an inter-core distance of 48–50μm and 44μm respectively. Even though the absolute maximum SNR is higher for designs with larger effective area, the overall capacity at 80μm2 for copropagating transmission can be larger as it may accommodate 4 uncoupled cores compared to only 2 uncoupled cores for Aeff=112μm2. © 2022 Author(s)
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