title: Simultaneous broadband microwave downconversion and programmable complex filtering by optical frequency comb shaping.
abstract: 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 possibilities for microwave signal processing by combining the flexibility of optoelectronic frequency comb technology with high-speed analog-to-digital converters.
authors.affiliation: School of Electrical and Computer Engineering, Purdue University, 465 Northwestern Avenue, West Lafayette, Indiana 47907, USA. torres31@purdue.edu
authors.forename: Victor
authors.initials: V
authors.lastname: Torres-Company
authors.forename: Daniel E
authors.initials: DE
authors.lastname: Leaird
authors.forename: Andrew M
authors.initials: AM
authors.lastname: Weiner