Direct bonding between InP substrate and magnetooptic waveguides

Hideki Yokoi, Tetsuya Mizumoto, Koichi Maru, Nobutaka Fuke, Yoshiyuki Naito

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


Wafer direct bonding was demonstrated between InP and magnetooptic materials. The effects of chemical treatment of two wafers before placing them into contact were investigated in order to enhance the durability of the bonded wafers through the various device fabrication processes. Phosphoric acid etching at a low temperature proved to be the most suitable treatment for the bonding between InP and gadolinium gallium garnet Gd3Ga5O12. In the case of this treatment, the bonding was studied between a planar InP substrate and magnetooptic waveguides on the garnet films.

Original languageEnglish
Pages (from-to)4138-4140
Number of pages3
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Issue number7
Publication statusPublished - 1996 Jul
Externally publishedYes


  • Direct bonding
  • Garnets
  • InP
  • Rib waveguide
  • SEM

ASJC Scopus subject areas

  • General Engineering
  • General Physics and Astronomy


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