Sumetsky M
OFS Laboratories, 19 Schoolhouse Road, Somerset, NJ 08873, USA.
Opt Express. 2012 Sep 24;20(20):22537-54. doi: 10.1364/OE.20.022537.
A SNAP (Surface Nanoscale Axial Photonics) device consists of an optical fiber with introduced nanoscale effective radius variation, which is coupled to transverse input/output waveguides. The input waveguides excite whispering gallery modes circulating near the fiber surface and slowly propagating along the fiber axis. In this paper, the theory of SNAP devices is developed and applied to the analysis of transmission amplitudes of simplest SNAP models exhibiting a variety of asymmetric Fano resonances and also to the experimental characterization of a SNAP bottle microresonator and to a chain of 10 coupled microresonators. Excellent agreement between the theory and the experiment is demonstrated.
一种表面纳米级轴向光子学（SNAP）器件由一根具有引入的纳米级有效半径变化的光纤组成，该光纤与横向输入/输出波导耦合。输入波导激发在光纤表面附近循环并沿光纤轴缓慢传播的回音壁模式。在本文中，发展了SNAP器件的理论，并将其应用于分析表现出各种非对称法诺共振的最简单SNAP模型的传输振幅，以及应用于SNAP瓶微谐振器和10个耦合微谐振器链的实验表征。理论与实验之间显示出极好的一致性。
