本實驗為雙Mach-Zehnder干涉儀用於分佈式光纖入侵感測定位系統，在實驗架構連接處多採熔接的方式，降低光傳輸的損耗及其反射光影響光路的行進。在光纖元件上藉由調整被動元件偏振控制器改善光訊號傳輸，使得入侵感測時波形干涉情況顯著，本實驗單模光纖低雙折射的特性及環境干擾而產生的極化衰減的影響因此得以消除。在定位方面上搭配三個自訂的判斷入侵條件，並利用傅立葉轉換運算的定位方法，再搭配增加定位準確度的特徵能量臨界值，準確定位入侵位置。

In this study, we use dual Mach-Zehnder interferometers for fiber-optic distributed intrusion detection and location sensor system. The scheme of the dual Mach-Zehnder interferometer used here is different from conventional ones, in which a dynamic polarization control needs to adjust the state of polarization to obtain interference signal patterns that can be used for location of intruders. By using a proposed algorithm of locating intruders here, the location of intruders can be determined. Also by setting an appropriate threshold value of characteristic power in this study, we can observe that the accuracy of locating intruders depends on this threshold value.

摘要 I
Abstract II
致謝 III
目錄 IV
圖目錄 VI
表目錄 VIII
第一章 序論 1
1.1 研究背景 1
1.2 研究動機與目標 2
1.3 論文架構 3
第二章 光纖元件及實驗基本原理之簡介 4
2.1 分佈式反饋雷射（Distributed Feedback Laser, DFB Laser） 4
2.2 摻鉺光纖放大器（Erbium-Doped Fiber Amplifier, EDFA） 5
2.3 光隔離器（Isolator） 7
2.4 極化保持光纖（Polarization Maintaining Fiber, PM Fiber） 8
2.5 偏振器（Polarizer） 9
2.6 偏振控制器（Polarization Controller, PC） 10
2.7 偏振分光器（Polarization Beam Splitter, PBS） 10
2.8 密集分波多工器（Dense Wavelength Division Multiplexer, DWDM） 11
2.9 雙Mach-Zehnder干涉儀定位原理 11
第三章 實驗架構 13
3.1 雷射光源及幫浦光源（Signal Laser and Pump Laser） 13
3.2 實驗架構及光干涉儀系統 22
3.3 判斷入侵條件與定位方法 23
第四章 實驗結果與討論 25
4.1 非入侵訊號分析與討論 25
4.2 入侵訊號經不同CPth值運算之定位分析與討論 29
4.3 前、中、後端入侵訊號定位搭配不同CPth值之比較 35
4.4 入侵訊號定位分析與討論 41
4.5 電子雜訊分析 45
參考文獻 48

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