Related Experiment Video
Updated: Apr 16, 2026

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
Published on: August 5, 2013
Generation of a widely tunable linearly chirped microwave waveform based on spectral filtering and unbalanced
Abstract:
We propose a method to generate a widely tunable linearly chirped microwave waveform based on spectral filtering and unbalanced dispersion. Heterodyne beating between two differently dispersed optical pulses in a photodetector produces the linearly chirped microwave waveform. Desired waveforms with flexible and independent control of the center frequency and sweep bandwidth can be obtained by simply tuning two optical filters. Simulation and experimental investigations are carried out, and the results are in good agreement. The measured microwave waveform has ∼5.2-ns pulse duration and ∼64-GHz sweep bandwidth, corresponding to a time-bandwidth product of ∼166.4 and a compression ratio of ∼248.
Related Concept Videos
Generating Electromagnetic Radiations
Standing Waves in a Cavity
Clipper Circuit
The operation of a clipper circuit can be exemplified by analyzing a dual-clipper configuration setup that integrates two ideal diodes, each paired with a biasing...

