A simple and practical microwave frequency-shifting technique based on a general temporal self-imaging (GTSI) effect in optical fiber is proposed, formulated, and experimentally demonstrated. The proposed technique can be applied to an arbitrary periodic microwave signal (e.g., a microwave tone) and provides unparalleled design flexibility to increase the frequency of the input microwave signal up to the desired value (limited only by the photodetector’s bandwidth). For instance, we demonstrate frequency upshifting of microwave tones from ≈ 10 to ≈ 50 GHz and from ≈ 40 to ≈ 354 GHz. These results also represent what is to the authors' knowledge the first experimental observation of GTSI phenomena.
© 2004 Optical Society of America
José Azaña, Naum K. Berger, Boris Levit, Vladimir Smulakovsky, and Baruch Fischer, "Frequency shifting of microwave signals by use of a general temporal self-imaging (Talbot) effect in optical fibers," Opt. Lett. 29, 2849-2851 (2004)