發送短信 : Temperature sensor by using selectively filled photonic crystal fiber Sagnac interferometer

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