表面纳米轴向光子(SNAP)是一种基于光纤表面制造光子回路的新型平台, 其表征可达亚埃米精度。其制作方法通常采用 CO2激光束曝光法, 在加工过程中使光纤局部退火并释放光纤中的张力, 该方法制作的微谐振器具有纳米尺度的有效直径变化 。主要概述了SNAP技术及其应用, 并着重介绍在2016~2017年期间获得的最新成果。特别介绍了基于毛细管纤维的SNAP技术在 微流体中的理论及实验结果, SNAP微瓶谐振器中频率梳的产生及SNAP微瓶谐振器的光力学理论。

Surface nanoscale axial photonics (SNAP) is a novel platform for fabrication of photonic circuits at the optical fiber surface and their characterization with unprecedented sub-angstrom precision. Their fabrication usually consists of exposures to a CO2 laser beam, which locally anneals the optical fiber and releases tension frozen into the fiber during manufacture. This results in fabrication of microresonators with an effective radius variation on the order of nanometers. In this paper, the ideas and applications of SNAP technology and concentrate on our recent findings obtained in 2016~2017 are overviewed. In particular, it describes our theoretical and experimental results on SNAP at the capillary fiber for applications in microfluidics, frequency comb generation in SNAP bottle resonators, and optomechanics of SNAP bottle resonators.