| 摘要 |
<p>The invention relates to a method and to an optical device in all-optical signal processing. It provides a novel way of taking into use the potential bandpass filtering capabilities of an optical complex one-pole resonator by, 1) excitating with at least part of the input signal an optical resonator arrangement that comprises two substantially parallel, independent, complex one-pole resonators arranged in a manner that one of said resonators is matched, and the other one is non-matched with the input signal, and 2) based on polarization separating further from the output of said optical resonator arrangement at least one optical output signal so that both said matched and non-matched resonators contribute to the formation of said output signal. The invention can be utilized, for example, for optical signal analysis, optical clock recovery, or for producing high-frequency outputs from lower frequency input signals, like e.g. optical microwave generation.</p> |
