Enhancement of Magneto Optic Effect in Optical Isolator with GaInAsP Guiding Layer by Selective Oxidation of AlInAs

Yuya Shoji, Hideki Yokoi, Tetsuya Mizumoto

Research output: Contribution to journalArticle

1 Citation (Scopus)


A selectively oxidized AlInAs layer with low refractive index can enhance the magneto optic effect and improve the characteristics of optical nonreciprocal devices. We successfully fabricated an optical waveguide with an AlInAs oxide lower cladding layer. The refractive index of the AlInAs oxide was determined to be 2.45 at λ = 1.55 μm. The optical nonreciprocal phase shift of this waveguide was more than twelvefold than that of the magneto optic waveguide with an InP cladding layer.

Original languageEnglish
Pages (from-to)590-593
Number of pages4
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Issue number2
Publication statusPublished - 2004 Feb



  • Direct bonding
  • Optical Isolator
  • Selective oxidation
  • Semiconductor

ASJC Scopus subject areas

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

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