本論文中設計光纖感測系統之光源，我們提出幾種不同架構的光纖雷射，分別為環型、光循環器式線性型與光纖迴路反射鏡式線性型，並使用摻鉺光纖與半導體光放大器作為增益介質。而光纖感測主要是以震動、溫度與應力應變之參數感測為目的，分別使用布拉格光纖光柵的波長飄移特性與極化保持光纖的高雙折射特性作為感測元件。首先介紹光纖感測相關技術之文獻回顧與布拉格光纖光柵原理特性，以及說明摻鉺光纖放大與光循環器之原理。第二章中介紹三種不同共振腔的摻鉺光纖雷射架構，並利用環型摻鉺光纖雷射結合光纖光柵組成震動感測系統，當震動的角度變化範圍在10°至40°時，波長變化30 pm至180 pm，功率變化0.6 dB至4.0 dB。
其次，利用以線性型光纖雷射進行長距離的應力應變感測，當以摻鉺光纖放大器為其增益介質時，當距離長度達到25 公里時，因損耗過大而無法產生雷射；而以半導體光放大器為增益介質的光纖雷射仍有雷射輸出，其動態量測範圍可達25公里以上。接著，利用線性型光纖雷射以光纖光柵為感測端進行應力應變感測，其對於張力與壓力的靈敏度分別為1.52 pm/με 與2.09 pm/με。最後，利用不同長度的極化保持光纖與光纖極化控制器組成Sagnac迴路進行溫度感測，在溫度範圍為30 ℃至60 ℃時有較大範圍的線性關係且其靈敏度較佳，當極化保持光纖長度分別為1 m、2 m及3 m時，其靈敏度分別為1.21 nm/℃、1.18 nm/℃、1.23 nm/℃。

In this thesis, we proposed several sensing light sources for fiber-optic sensing. There are ring cavity fiber laser, linear cavity fiber laser, fiber loop mirror (FLM) based fiber laser and semiconductor optical amplifier based fiber laser. The important parameters such as earthquake vibration, temperature, strain and stress etc. were measured and analyzed using either light source. First, we reviewed the development of fiber-optic sensing technologies, as well as the mechanism of fiber Bragg gratings, Erbium-doped fiber amplifier (EDFA) and optical circulator. The wavelength drift is 30 to 180 pm when the vibration angle ranges from 10°C to 40°C for a simple pendulum. Using FBGs as sensing heads, the measurement dynamic range is more than 25 km when a semiconductor optical amplifier based fiber laser is sued as sensing light source for strain/stress measurement. The sensitivities for strain and stress are 1.52 pm/με and 2.09 pm/με, respectively. Also, a Sagnac loop consisting of polarization maintaining fiber (PMF) and fiber polarization controller is used for temperature sensing. There is a linear relationship with good sensitivity in temperature range of 30℃ to 60 ℃. With the length of 1 m, 2 m and 3 m for PMFs, the sensitivity are 1.21 nm/℃、1.18 nm/℃ and 1.23 nm/℃,respectively.

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