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Updated: May 29, 2026
Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
Published on: August 5, 2013
Tunable chirped microwave photonic filter employing a dispersive Mach-Zehnder structure
Xiaoxiao Xue1, Xiaoping Zheng, Hanyi Zhang
1State Key Laboratory on Integrated Optoelectronics/Tsinghua National Laboratory for Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing, China. xxx03@mails.tsinghua.edu.cn
Abstract:
A Mach-Zehnder structure with modulation in one arm and dispersive time delay in the other is proposed to implement highly flexible single-bandpass chirped microwave photonic filters based on broadband optical sources. Both the amplitude response and the time delay slope can be fully reconfigured via control of the optical spectra and dispersion. The passband can also be widely tuned without changing the shape. A chirped filter with a bandwidth of ∼4 GHz, a delay slope of ∼-0.6 ns/GHz, and a tunability up to 40 GHz is demonstrated experimentally.
