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We realized mode-division multiplexing(MDM) transmission by using orthogonal LP modes with negligible modal crosstalk, for the first time. A 2×10Gbps MDM transmission was achieved over a 10km two-mode fiber with sufficiently low power penalty.
Trench-assisted multi-core fiber (TA-MCF) is proposed to achieve high dense MCF design with a solid structure. The crosstalk value at 1.55 μm of fabricated TA-MCF is estimated to be -35 dB at 100 km.
Power-conversion efficiency reduction on a quasi-homogeneous solid multi-core fiber is numerically investigated. The fiber length dependence of measured crosstalk of fabricated fibers is in good agreement of simulation result by power-coupled equation.
Microstructured optical fiber couplers are proposed that operate by resonant rather than proximity energy transfer via transverse waveguides and resonator arrays in a fiber cross-section, allowing significant inter-fiber separations, eliminating inter-core crosstalk by proximity coupling.
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