Abstract
Different optical filtering scenarios involving microwave photonic phase
shifters based on semiconductor optical amplifiers are investigated numerically
as well as experimentally with respect to noise performance. Investigations
on the role of the modulation depth and number of elements in cascaded shifting
stages are also carried out. Suppression of the noise level by more than 5
dB has been achieved in schemes based on band-pass optical filtering when
three phase shifting stages are cascaded.
© 2011 IEEE
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