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Opt Lett. 2012 Mar 1;37(5):845-7. doi: 10.1364/OL.37.000845.

Multitap microwave photonic filters with programmable phase response via optical frequency comb shaping.

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  • 1School of Electrical and Computer Engineering, Purdue University, 465 Northwestern Avenue, West Lafayette, Indiana 47907, USA.


We present a programmable multitap microwave photonic filter with an arbitrary phase response operating over a broad bandwidth. Complex coefficient taps are achieved by optical line-by-line pulse shaping on a 10 GHz flat optical frequency comb using a novel interferometric scheme. Through high-speed real-time measurements, we demonstrate programmable chirp control of a waveform via phase filtering. This achievement enables us to compress broadband microwave signals to their corresponding bandwidth-limited pulse duration.

© 2012 Optical Society of America

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