以光纖為本體的周界安防系統多以干涉儀為主，其中又以桑克干涉儀所製成的系統為最常見，相較它種的光纖式干涉儀，光纖式桑克干涉儀對環境值較不敏感，不易產生誤判的情形，十分適合應用於周界安防之上，而本實驗係以光纖式的桑克干涉儀做為實驗架構的基底，透過改變桑克干涉儀原有的配置，藉以消除桑克干涉儀既有的響應與位置有關的特性，使得實驗架構能靈活的應用於入侵偵測上。
本實驗透過模擬實驗架構的輸出，藉以分析實驗架構的特性，並搭配實際的實驗，經由比對兩者之結果，藉以獲得實驗架構之特性。

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