Simultaneous broadband microwave downconversion and programmable complex filtering by optical frequency comb shaping
Leaird, Daniel E.
Weiner, Andrew M.
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High-repetition-rate optical frequency combs can act as broadband photonic mixers and downconvert a microwave signal to an intermediate frequency (IF) band so that it becomes accessible with high-speed electronics. In this Letter, we show that with line-by-line pulse shaping and dispersive propagation, the photonic mixer can simultaneously perform programmable multitap complex-coefficient-filtering within the IF band. This solution opens new possi- bilities for microwave signal processing by combining the flexibility of optoelectronic frequency comb technology with high-speed analog-to-digital converters.
Optics LettersThe article of record as published may be found at http://dx.doi.org/10.1364/ol.37.003993