Broadband frequency-modulated continuous-wave signal generation by optical modulation technique

Atsushi Kanno, Tetsuya Kawanishi

Research output: Contribution to journalArticlepeer-review

78 Citations (Scopus)


Optical frequency-modulated continuous-wave (FM-CW) signal generation with a bandwidth of 35 GHz and a pulse duration of 1 \mus in the range of 75-110 GHz is demonstrated with an optical frequency multiplier consisting of an optical modulator and optical filters. The FM-CW signal generator is used as a signal source for the surveillance of obstacles and debris in a large area by a distributed radar system connected to the optical fiber network. The system for millimeter-wave FM-CW signal generation is realized using the functions of a multi-frequency band and segmentation of the radar heads with several channels to avoid radio-frequency interference. The wavelength-division multiplexing technology with simple optical heterodyning aids in realizing these functions with high availability.

Original languageEnglish
Article number6802333
Pages (from-to)3566-3572
Number of pages7
JournalJournal of Lightwave Technology
Issue number20
Publication statusPublished - 2014 Oct 15
Externally publishedYes


  • Frequency-modulated continuous-wave
  • millimeter-wave radar
  • optical frequency domain reflectometry
  • optical modulation
  • radio over fiber

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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