光纖布拉格光柵與陣列波導光柵之振動感測與定位應用

Vibration sensing and positioning applications of fiber Bragg gratings and arrayed waveguide gratings

廖昕昱(Xin-Yu Liao)

指導教授 ： 鄭旭志

國立虎尾科技大學/電機資訊學院/光電工程系光電與材料科技碩士班/碩士(2017年)

摘要

在本研究中，我們使用陣列波導光柵(Arrayed Waveguide Gratings, AWG)解調光纖布拉格光柵(Fiber Bragg Grating, FBG)的振動訊號為實驗系統架構，光纖布拉格光柵的反射波長，對應變、溫度、振動有敏感特性，振動會使光纖布拉格光柵中心波長偏移，透過陣列波導光柵通道斜率進行光強度調變而量測到外在所受的物理參數。
陣列波導光柵可以使用多個光纖布拉格光柵來達到多點量測。在本實驗中，利用兩個光纖布拉格光柵作為感測元件測量振動訊號。施加振動訊號在兩個光纖布拉格光柵之間，透過示波器顯示兩個光纖布拉格光柵所測得的訊號時間差，可以計算出振動訊號與光纖布拉格光柵的距離。

關鍵字

陣列波導光柵 ； 光纖布拉格光柵 ； 光纖感測器。

並列摘要

In this study, we combine fiber Bragg grating and arrayed waveguide grating to achieve vibration sensing system. The reflection wavelength of fiber Bragg grating is sensitive to strain, temperature and vibration. When the vibration signal applied to the fiber Bragg grating, it will caused the center wavelength changed. Utilize the slope of the arrayed waveguide grating pass band to accomplish light intensity modulation.
Arrayed waveguide gratings can use multiple fiber Bragg gratings for multi-point measurements. We use two fiber Bragg grating sensors to measure vibration. We apply vibration signal between two fiber Bragg gratings. The oscilloscope shows the different time of two measured signals. We can calculated distance which is vibration signal between the two fiber Bragg gratings.

並列關鍵字

Arrayed waveguide grating ； Fiber Bragg grating ； Optical fiber sensor

參考文獻

[13] 吳岳勳，2011，“運用光纖環與光纖光柵於同時測量溫度與位移”，國立虎尾科技大學光電與材料科技研究所論文。

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