Wang Houxiao, Zhou Wei, Cui Ying, Wang Guanghui, Shum Perry Ping
School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore.
J Nanosci Nanotechnol. 2013 Jul;13(7):4581-6. doi: 10.1166/jnn.2013.6698.
The angled and tapered antireflection and transmission-enhanced fiber-optic tips were designed, fabricated, and characterized based on nanoscale surface modification using the nano-precision focused ion beam (FIB). The developed optical fiber tips showed combined functions of antireflection and transmission enhancement for higher detection efficiency or signal-to-noise ratio because the FIB-milled nanoholes into the fiber tip endfaces could act as tapered air-filled nanopillars, changing the light propagation direction, enhancing the scattering effect, and allowing more photons to transmit along/near the glass/air interface to enhance the local evanescent field for sensing/detection.
基于使用纳米精度聚焦离子束（FIB）的纳米级表面改性，设计、制造并表征了具有倾斜和锥形结构的抗反射及透射增强型光纤尖端。所开发的光纤尖端展现出抗反射和透射增强的组合功能，以实现更高的检测效率或信噪比，这是因为FIB在光纤尖端端面上铣出的纳米孔可充当锥形充气纳米柱，改变光的传播方向，增强散射效应，并使更多光子沿玻璃/空气界面或在其附近传输，从而增强用于传感/检测的局部倏逝场。
