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Instantaneous microwave frequency measurement system based on a simplest integ rated microwave photonic filter



  1. Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming 650504 , China
  2. Yunnan Key Laboratory of Computer Technology Applications, Kunming 650504 , China


A simplest integrated microwave photonic filter (IMPF) is proposed and designed as an optical discriminator for instantaneous microwave frequency measurement (IMFM). Amplitude comparison functions (ACFs) of the IMFM system based on a Mach Zehnder modulator (MZM) and a phase modulator (PM) are theoretically deduced and analyzed. Simulation results demonstrate that by designing th e IMPF with lengths of L 1 =0.5 mm and L 2 =1 mm, and simultaneously tuning optical carrier of the MZM at one valley, one peak of the spectral response, the IMFM system with measureable range from DC to 35 GHz and ACF slope of 29 dB can be obtained. In additio n, when using a PM, the monotonic frequency range is 0 Hz to 35.3 GHz with the ACF slope is 84.1 dB. However, from 4 GH to 32.1 GHz the ACF slope is only 17.6 dB. Both theoretical and simulation results indicate that based on such simplest IMPF a new appro ach with advantages of compact structure and better reconfigurability can be established for the IMFM..


Integrated optics, Microwave photonic filter, I nstantane ous frequency measurement (IFM), E lectro optic (EO) modulation.

Submitted at: Aug. 26, 2019
Accepted at: June 16, 2020


JIAHONG ZHANG, HAIYING LU, ZHENGANG ZHAO, Instantaneous microwave frequency measurement system based on a simplest integ rated microwave photonic filter, Journal of Optoelectronics and Advanced Materials Vol. 22, Iss. 5-6, pp. 226-231 (2020)