Temperature sensor based on surface Bragg grating of sidepolished fiber
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摘要: 为了实现在侧边抛磨光纤（SPF）上制作布拉格光栅结构并提高器件设计灵活性，利用重铬酸盐明胶（DCG）作为光刻材料，提出一种新型的光纤表面布拉格光栅制作方法并对该器件温度传感特性进行研究。使用轮式抛磨系统制作SPF,并在SPF侧抛面上旋涂DCG,通过干涉光束曝光显影制作表面布拉格光栅。光谱测量表明：带有布拉格光栅的侧边抛磨光纤在1 480.2 nm处有透射谷，在相应位置反射谱有明显反射峰，其调制幅度达到15.9 dB，这是由于表面光栅的布拉格反射所致。温度传感实验表明，该布拉格反射峰的温度灵敏度为17.84 pm/℃。这种器件已在光纤传感和光纤滤波器等方面获得应用。Abstract: To fabricate the Bragg grating on the sidepolished fiber(SPF) and improve the flexibility of grating design, a novel method for fabricating surface Bragg grating on SPF with dichromate gelatin(DCG) was demonstrated. SPF was fabricated by wheel polishing method and DCG was spin coated on the polished surface of SPF as photoresist. Using holography technique, Bragg grating was fabricated on the polished surface. Spectral measurement results show that a significant reflection peak can be observed at 1 480.2 nm, which is well corresponding to the transmission valley. The modulation amplitude of this reflection peak is up to 15.9 dB, due to the reflection of surface Bragg grating. Temperature sensing experiment results show that with temperature increasing, the reflection peak can have red shift. its sensitivity is 17.84 pm/℃. This fiber sensor has good potential in the application of fiber sensor and fiber filter.
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期刊类型引用(3)
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百度学术
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3. 侯启真，刘衍帆，尚美琪. 机场跑道临时关闭警示灯的光学设计. 应用光学. 2017(02): 200-204 . 本站查看
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