An approach to generate high-quality broadband frequency swept millimeter-wave (mm-wave) pulses based on photonics-assisted direct frequency up conversion of a low-frequency chirped microwave drive signal has been proposed and demonstrated. This is made possible by using an unbalanced temporal pulse shaping system involving two cascaded Mach-Zehnder modulators both biased at the minimum transmission points. The proposed approach is verified by simulations. A frequency swept mm-wave pulse with instantaneous frequency spanning from 40 to 100 GHz is generated thanks to 40 times frequency up conversion. Two-fold improvement on the time-bandwidth product of the generated waveform is also achieved thanks to cascaded modulation.
Original languageEnglish
Title of host publicationInternational Topical Meeting on Microwave Photonics (MWP)
Place of PublicationPiscataway, NJ, USA
Number of pages4
ISBN (Electronic)978-1-4673-9368-3
Publication statusPublished - 29 Oct 2015

ID: 23891785