A new technique of optical ranging by a frequency-shifted feedback laser

Koichiro Nakamura, Toshiharu Miyahara, Masato Yoshida, Takefumi Hara, Hiromasa Ito

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)


We report an application of the frequency-shifted feedback (FSF) laser to optical ranging. The FSF laser output consists of periodically generated chirped frequency components whose chirp rate is faster than 100 PHz/s (P = 1015). By taking advantage of the spectral features of the FSF laser, the conventional limits on operating range and spatial resolution are removed. In the experiment, a distance of 3.7 km was measured with a resolution of 9.4 mm.

Original languageEnglish
Pages (from-to)1772-1774
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number12
Publication statusPublished - 1998 Dec


  • Acoustooptic modulation
  • Frequency chirp
  • Frequency-shifted feedback laser
  • Optical reflectometry

ASJC Scopus subject areas

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


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