Magneto-optical isolator with silicon waveguides fabricated by direct bonding

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

doi:10.1063/1.2884855

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 journal › Article › peer-review

241 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 language	English
Article number	071117
Journal	Applied Physics Letters
Volume	92
Issue number	7
DOIs	https://doi.org/10.1063/1.2884855
Publication status	Published - 2008 Mar 3

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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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.",

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AU - Mizumoto, Tetsuya

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AU - Osgood, Richard M.

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AB - 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.

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