Magneto-optical isolator with silicon waveguides fabricated by direct bonding
- 18 February 2008
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 92 (7), 071117
- https://doi.org/10.1063/1.2884855
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 CeY2Fe5O12 (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 21dB is obtained at a wavelength of 1559nm.Keywords
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