Abstract
In this work, we present a numerical investigation of the transmission
and switching of fundamental solitons in asymmetric nonlinear
directional couplers, constructed with dispersion decreasing fibers
(DDF). In this configuration, the coupler consists of two separated
parallel fibers, one with a DDF profile and the other with a constant
profile. We obtained the characteristics of transmission, extinction
ratio, and compression factor of the device.
The truth tables for the logic gates AND, OR, and XOR were obtained. We
concluded that the device presenting a constant profile provided the
best performance of the studied logic gates. Logic gates AND, OR, and
XOR operating with extinction coefficient around 16.6 dB were obtained.
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