Abstract
We examine again the crosstalk level ( Xtalk) and extinction ratio
(Xratio) of an acousto-optic tunable filter (AOTF) operating with
ultrashort light pulses ( 2 ps), now considering the loss effect. The
compression factor was studied for the switched pulse with lossy AOTF (alpha(dB) = 4 dB/mm) considering five nonlinearity profiles. One can
observe that there is always an optimum value for delta ( final value of
the nonlinearity) that one can obtain a switched pulse with the same time duration of the input pulse ( C = 1). The compression factor for
the switched pulse along the filter length shows that for the constant
profile, the compression factor is around 1 all over the device. The
study of the crosstalk level (Xtalk) of this device, considering the
optimum values of delta obtained from the compression studies, as a
function of the pump power (P-0) was done. The acousto-optic tunable
filter (AOTF) has attracted great attention in recent years, in part
because it appears to be a suitable basis for multi-wavelength optical
cross-connects. It is probably the only known tunable filter that is
capable of selecting several wavelengths simultaneously. This capability
can be used to construct a multi-wavelength router.
Users
Please
log in to take part in the discussion (add own reviews or comments).