Zhou Kaiming, Yan Zhijun, Zhang Lin, Bennion Ian
Photonic Research Group, Aston University, Birmingham, United Kingdom.
Opt Express. 2011 Jun 6;19(12):11769-79. doi: 10.1364/OE.19.011769.
We report on inscription of microchannels of different widths in optical fiber using femtosecond (fs) laser inscription assisted chemical etching and the narrowest channel has been created with a width down to only 1.2μm. Microchannels with 5μm and 35μm widths were fabricated together with Fabry-Pérot (FP) cavities formed by UV laser written fiber Bragg gratings (FBGs), creating high function and linear response refractometers. The device with a 5μm microchannel has exhibited a refractive index (RI) detection range up to 1.7, significantly higher than all fiber grating RI sensors. In addition, the microchannel FBG FP structures have been theoretically simulated showing excellent agreement with experimental measured characteristics.
我们报道了利用飞秒（fs）激光刻写辅助化学蚀刻在光纤中刻写不同宽度的微通道，并且已经制造出了宽度低至仅1.2μm的最窄通道。宽度为5μm和35μm的微通道与由紫外激光写入的光纤布拉格光栅（FBG）形成的法布里-珀罗（FP）腔一起制造，从而创建了高性能和线性响应的折射仪。具有5μm微通道的器件展现出高达1.7的折射率（RI）检测范围，显著高于所有光纤光栅RI传感器。此外，对微通道FBG FP结构进行了理论模拟，结果显示与实验测量特性具有极好的一致性。
