Flexible bandpass filtering using a coherent optical feedback technique.
A certain flexibility in an optical filter experiment can be achieved with coherent optical feedback because the transfer function of such systems depends on an adjustable phase. With a simple filter in the optical system, a spatial bandpass characteristic is attainable. The tuning frequency of the bandpass is a function of the phase of the feedback signal. The variable bandpass effect is demonstrated with different inputs.
Händler
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E
Röder
U
U