Broadband instantaneous multi-frequency measurement based on chirped pulse compression

Beibei Zhu, Min Xue, Changyuan Yu, Shilong Pan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

Abstract

A broadband instantaneous multi-frequency measurement system based on chirped pulse compression, which potentially has a sub-megahertz (MHz) accuracy and a hundred-gigahertz (GHz) measurement range, is demonstrated. A signal under- test (SUT) is converted into a carrier-suppressed double-sideband (CS-DSB) signal, which is then combined with an optical linearly frequency-modulated signal having the sweeping range covering the +1st-order sideband of the CSDSB signal. With photo detection, low-pass filtering, and pulse compression, accurate frequencies of the SUT are obtained via locating the correlation peaks. In the experiment, single- and multi-frequency measurements with a measurement range from 3 to 18 GHz and a measurement accuracy of <±100 MHz are achieved.

Original languageEnglish
Article number101202
JournalChinese Optics Letters
Volume19
Issue number10
DOIs
Publication statusPublished - Oct 2021

Keywords

  • Chirped pulse compression
  • Frequency-to-time mapping
  • Instantaneous frequency measurement
  • Microwave photonics

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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