Zusammenfassung
In this paper we report a numerical investigation of an all-fibre
narrowband transmission filter in the arrangement of two identical
photo-imprinted Bragg gratings symmetrically located in each arm of a
Michelson Interferometer, simulating, thus, an add-drop filter. The
transmission characteristics and in addition the crosstalk level and
extinction ratio, were studied. The coupled mode theory and the
fourth-order Runge-Kutta method were applied, respectively, to solve the
coupled differential equations. This is the first study, as far as we
now, of the performance of this device considering the nonlinearity of
the fibre coupler and linearity of the fibre Bragg gratings. The device
is presenting a highly nonlinear behavior dependence in dephasing and
pump power.
Nutzer