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A five-mode multiplexer/demultiplexer based on a partially elongated five-core fiber is presented. Multiplexing operation is experimentally verified. Mode selectivity higher than 95% at 1550 nm, for both the LP11 and the LP21 mode, is achieved.
In this work, we studied modulational instability (MI) in an asymmetrical dual-core optical fiber with different power ratio at under normal (β2 >0) and anomalous dispersion (β2 < 0) regime. We investigate the variation of modulational instability for symmetric and asymmetric power. The result shows the influence of power in the frequency at which the MI gain appears. When the nonlinear coefficient...
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