Ringing phenomenon based whispering-gallery-mode sensing.
Ringing phenomenon based whispering-gallery-mode sensing.
复制标题
基于回音壁模式传感的振铃现象
DOI：
10.1038/srep19597
复制
发表时间：
2016-01-22
影响因子：
4.6
通讯作者：
Lin XM
中科院分区：
文献类型：
--
作者：
Ye MY;Shen MX;Lin XM
高灵敏度传感是回音廊模式(WGM)微谐振器最重要的应用之一，通常是通过可调谐的连续波激光在相对较慢的速度下借助光纤锥形扫描回音廊模式来实现的。已知，如果可调谐的连续波激光器快速扫过高质量的回音廊模式，将会观察到振铃现象。WGM微谐振器中的振铃现象主要用于测量Q因子和模式耦合强度。在这里，我们通过实验证明了基于振铃现象可以实现WGM传感。这种传感的完成时间要短得多，而且不受激光波长漂移引起的噪声的影响。
Highly sensitive sensing is one of the most important applications of whispering-gallery-mode (WGM) microresonators, which is usually accomplished through a tunable continuous-wave laser sweeping over a whispering-gallery mode with the help of a fiber taper in a relative slow speed. It is known that if a tunable continuous-wave laser sweeps over a high quality whispering-gallery mode in a fast speed, a ringing phenomenon will be observed. The ringing phenomenon in WGM microresonators is mainly used to measure the Q factors and mode-coupling strengths. Here we experimentally demonstrate that the WGM sensing can be achieved based on the ringing phenomenon. This kind of sensing is accomplished in a much shorter time and is immune to the noise caused by the laser wavelength drift.