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  _____    _    _                ___              
 / ____|| | || | ||   ____      / _ \\      ___   
/ //---`' | || | ||  |    \\   / //\ \\    /   || 
\ \\___   | \\_/ ||  | [] ||  |  ___  ||  | [] || 
 \_____||  \____//   |  __//  |_||  |_||   \__ || 
  `----`    `---`    |_|`-`   `-`   `-`     -|_|| 
                     `-`                     `-`

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發送短信 : All-optical switch based on 1x3 multimode interference couplers