Magneto-optical isolator with silicon waveguides fabricated by direct bonding

Yuya Shoji, Tetsuya Mizumoto, Hideki Yokoi, I. Wei Hsieh, Richard M. Osgood

Research output: Contribution to journalArticle

213 Citations (Scopus)

Abstract

A magneto-optical isolator is demonstrated for use with a Si waveguide. The isolator is based on a Mach-Zehnder interferometer employing a nonreciprocal phase shift and is fabricated by bonding a magneto-optic garnet Ce Y2 Fe5 O12 (Ce:YIG) directly onto the Si waveguide. The surface-activated bonding is based on oxygen-plasma exposure in a high-vacuum chamber. The nonreciprocal phase shift is observed by applying an external magnetic field. An isolation ratio of 21 dB is obtained at a wavelength of 1559 nm.

Original languageEnglish
Article number071117
JournalApplied Physics Letters
Volume92
Issue number7
DOIs
Publication statusPublished - 2008

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isolators
phase shift
waveguides
yttrium-iron garnet
magneto-optics
oxygen plasma
silicon
Mach-Zehnder interferometers
vacuum chambers
high vacuum
garnets
isolation
magnetic fields
wavelengths

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Magneto-optical isolator with silicon waveguides fabricated by direct bonding. / Shoji, Yuya; Mizumoto, Tetsuya; Yokoi, Hideki; Hsieh, I. Wei; Osgood, Richard M.

In: Applied Physics Letters, Vol. 92, No. 7, 071117, 2008.

Research output: Contribution to journalArticle

Shoji, Yuya ; Mizumoto, Tetsuya ; Yokoi, Hideki ; Hsieh, I. Wei ; Osgood, Richard M. / Magneto-optical isolator with silicon waveguides fabricated by direct bonding. In: Applied Physics Letters. 2008 ; Vol. 92, No. 7.
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