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

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