Magneto-optic effect in amorphous Bi3Fe5O 12 waveguides sputtered at room temperature

Hiroshi Taura, Yohei Shishido, Yuichiro Tanushi, Tomohiro Tokunaga, Takahiro Onimaru, Shin Yokoyama

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


We have fabricated optical waveguides using amorphous Bi3Fe 5O12 (BIG) film deposited by RF magnetron sputtering at room temperature and evaluated the Faraday effect. The fabricated waveguide consists of Si waveguides and a short BIG waveguide. Light propagation loss of the BIG waveguide is 100 dB/cm. The optical modulation of 9% was obtained on the basis of the Faraday effect using the BIG waveguide/polarizer system at an external magnetic field of 2000 Oe. The figure of merit of 10deg/dB, which is 1/4 that of an epitaxial BIG film, was obtained.

Original languageEnglish
Pages (from-to)2915-2920
Number of pages6
JournalJapanese journal of applied physics
Issue number4 PART 2
Publication statusPublished - 2008 Apr 25
Externally publishedYes


  • Amorphous BiFeO
  • Faraday effect
  • Ferromagnetism
  • Figure of merit
  • Magneto-optic effect
  • Optical interconnection
  • Propagation loss
  • RF magnetron sputtering
  • Ring resonator optical switch
  • Waveguide

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)


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