本篇論文我們使用簡單的三角形聚合物封裝布拉格光纖光柵(FBG)當作懸臂梁量測振動物體的加速度，並在懸臂梁上放置重物mass，隨著振動產生垂直方向的加速度，造成mass不斷地點擊聚合物表面，且由於三角形各個位置厚度不同的特性，使FBG在不同位置厚度不同產生週期變化，藉以形成週期漸變的布拉格光纖光柵改變反射光功率。
實驗證實光功率大小和加速度大小有線性的關係，靈敏度達56.06μW/g，共振頻率為60Hz，且由於FBG反射頻寬與溫度變無關，因此外部環境溫度改變的情況下，依舊不影響其量測靈敏度，實現溫度無感的加速度量測。

In this thesis, we use a single triangle-shaped polymer packaged FBG to calibrate acceleration of a vibrating object. The polymer with FBG inside it is used to be a cantilever beam, with a mass upon to strike it. Vertical acceleration applied to the sensing structure leads to striking on the surface of polymer continuously. Then, because the thicknesses of the polymer are different at different positions, the grating period of FBG varies with position, and the reflected optical power of FBG also varies with acceleration, as the mass-induced strain becomes nonuniform along the longitudinal direction of the FBG.
When such a strain applies, the FBG is chirped and its reflected optical power changes linearly with the applied acceleration. A high sensitivity of 56.06μW/g at a resonant frequency of 60Hz is demonstrated in the experiment. It is also obtained experimentally that acceleration measurement is temperature insensitive, owing to the fact that the reflection bandwidth of the FBG is temperature-independent.

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