Ultrafast gating circuit using coupled waveguides

Koichi Narahara, Taiichi Otsuji

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


A novel electrical gating circuit is proposed for ultrafast applications in electronics. The circuit employs a twoconductor coupled line, and does not have any active devices such as transistors or diodes. Hence, the ultimate speed of the circuit is limited only by the cutoff frequency of the lines employed. The authors describe the circuit theory and discuss the results of experiments that involved ultrafast measurement using electrooptic sampling techniques. The latter suggests the potential of the circuit to achieve the gatings of at least 80-Gbit/s.

Original languageEnglish
Pages (from-to)98-106
Number of pages9
JournalIEICE Transactions on Electronics
Issue number1
Publication statusPublished - 2000
Externally publishedYes


  • Coupled lines
  • Electro-optic sampling
  • Propagation modes
  • Ultrafast electronics

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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