Bistable optical switch using a yttrium-iron-garnet crystal with phase matching films

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  • M. Shirasaki
    Fujitsu Laboratories Ltd., 1015 Kamikodanaka, Nakahara, Kawasaki, 211, Japan
  • N. Tagaki
    Fujitsu Laboratories Ltd., 1015 Kamikodanaka, Nakahara, Kawasaki, 211, Japan
  • T. Obokata
    Fujitsu Laboratories Ltd., 1015 Kamikodanaka, Nakahara, Kawasaki, 211, Japan

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<jats:p>A magneto-optical switch using a yttrium-iron-garnet crystal plate with phase matching films requiring a drive voltage of only 5V is demonstrated at 1.3 μm wavelength. Using a semihard magnetic material, we developed a bistable magneto-optical switch which drives with a switching speed of 20 μs. An extinction ratio of 24 dB was obtained.</jats:p>

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