Photosensitive adhesive bonding process of magnetooptic waveguides with Si guiding layer for optical nonreciprocal devices

Salinee Choowitsakunlert, Kenji Takagiwa, Takuya Kobashigawa, Nariaki Hosoya, Rardchawadee Silapunt, Hideki Yokoi

Research output: Contribution to journalArticle


A photosensitive adhesive bonding process for a magnetooptic waveguide for an optical isolator employing a nonreciprocal guided-radiation mode conversion is investigated at 1.55 µm. The magnetooptic waveguide is a straight rib type, and it is fabricated by bonding the Si guiding layer to a magnetic garnet. In the fabrication process, an adhesive material is diluted to obtain a certain thickness before depositing on a silicon-on-insulator (SOI) substrate. The relationship between the percent dilution ratio and the thickness of the adhesive layer is considered. The smallest gap thickness is found to be 0.66 µm at a dilution ratio of 2%.

Original languageEnglish
Article number058007
JournalJapanese Journal of Applied Physics
Issue number5
Publication statusPublished - 2018 May 1


ASJC Scopus subject areas

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

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