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. 2017 Dec 1;6(12):e17110. doi: 10.1038/lsa.2017.110

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Copyright © 2017 The Author(s)

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(a) Mesh configuration makes the transmission of the mode reconstructed at port Out₁ progressively increase a₄, while the crosstalk due to the concurrent modes A a₁, B a₂ and C a₃ reduces. (b) Reconstruction of mode A b₁, mode B b₂, mode C b₃, and mode D b₄ at port Out₁ can be achieved with less than −20 dB residual crosstalk of the three concurrent modes over a bandwidth of ~ 10 nm.