title: Radio-frequency waveform generator with time-multiplexing capabilities based on multi-wavelength pulse compression.
abstract: We demonstrate a new photonically assisted reconfigurable radio-frequency waveform generator. The setup is based on phase modulating a multi-wavelength pulse source and subsequent compression in a dispersive medium. Under the appropriate conditions, we show that the photodetected electrical signal is broadband and coherent. Specifically, we show that this system allows for the synthesis of a reconfigurable finite-impulse-response filter where the number of filter taps is given by the number of wavelengths available from the multi-wavelength source and the reconfiguration is determined simply by their power and wavelength separation. We also show that this technique allows for time-multiplexing the synthesized waveforms, thus leading to an effective switching speed fixed by the clock rate. In particular, we show transitions between synthesized waveforms with a frequency content > 60 GHz in periods shorter than 100 ps.
authors.affiliation: Department of Electrical and Computer Engineering, McGill University, H3A 2A7 Montreal, Quebec, Canada. victor.torrescompany@mail.mcgill.ca
authors.forename: Víctor
authors.initials: V
authors.lastname: Torres-Company
authors.forename: Lawrence R
authors.initials: LR
authors.lastname: Chen
mesh_terms: D017076:Computer-Aided Design; D055590:Electromagnetic Phenomena; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008872:Microwaves; D011846:Radio Waves; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D013685:Telecommunications / Q000295:instrumentation*