Optical signal processing for wireless transmission

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Millimeter-wave bands are attracting attention because of the availability of wideband for high-speed transmission. However, due to the limitation of the performance of electric signal processing, it is rather difficult to modulate and demodulate millimeter-wave signals with high-speed baseband modulation. In this paper, we describe optical signal processing for high-speed modulation of millimeter-wave, based on high-speed and precise lightwave control. In optical fiber communication systems, various types of modulation formats, such as quadrature-amplitude-modulation, are reported to achieve high-speed transmission. Optical two-tone signals can be converted into millimeter-wave signals by using high-speed photodetectors. This technique can be used for distribution of stable reference signals in large-scale antenna arrays for radio astronomy. By using the millimeter-wave signal generation technique and the optical advanced modulation formats, we can achieve high-speed modulation of millimeter-waves, where the carrier frequency and bit rate can be over 90GHz and 40Gb/s, respectively.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 2012
Externally publishedYes
EventBroadband Access Communication Technologies VI - San Francisco, CA, United States
Duration: 2012 Jan 242012 Jan 26


OtherBroadband Access Communication Technologies VI
CountryUnited States
CitySan Francisco, CA



  • Microwave
  • Millimeter-wave
  • Optical modulation
  • Optical modulator
  • Sideband

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Kawanishi, T. (2012). Optical signal processing for wireless transmission. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 8282). [828203] https://doi.org/10.1117/12.907576