Detection of photomixing signals with a YBCO Josephson junction coupled to a coplanar waveguide

Iwao Kawayama, Ryuhei Kinjo, Toshihiko Kiwa, Hironaru Murakami, Masayoshi Tonouchi

Research output: Contribution to journalArticlepeer-review


We have fabricated a generation and detection system of photomixing signals using a photomixing technique and a Josephson junction detector. Up to now, an electromagnetic wave generated by a heterodyne mixing of two lasers was emitted from an antenna, and irradiated to a Josephson junction. In this study, we have developed the system, and the photomixing signal was introduced into a coaxial cable and a coplanar wave guide coupled to a Josephson junction. This structure is more suitable for device application since it can easily be integrated into electronic devices. With this system we can clearly observed photomixing signals from 16 GHz to 95 GHz using a uni-traveling-carrier photodiode as a photomlxer as well as signals in the range of 14 GHz to 50 GHz using an InGaAs PIN photodiode.

Original languageEnglish
Pages (from-to)321-323
Number of pages3
JournalIEEE Transactions on Applied Superconductivity
Issue number2
Publication statusPublished - Jun 2007


  • Josephson junction
  • Photomixing
  • Shapiro step
  • Waveguide
  • YBCO

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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