文章基本信息

标题：Ringing phenomenon based measurement of weak mode-coupling strength in an optical microresonator
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作者：Ming-Yong Ye ; Mei-Xia Shen ; Xiu-Min Lin 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2017
卷号：7
期号：1
页码：17412
DOI：10.1038/s41598-017-16961-7
语种：English
出版社：Springer Nature
摘要：There is always a coupling between the degenerate clockwise (CW) and counter-clockwise (CCW) modes in a whisperinggallery- mode (WGM) optical microresonator, since the surface of the microresonator can not be perfectly smooth. It is important to measure this coupling strength in many applications. When the coupling strength is strong, the conventional method by observing mode splitting in the stationary spectrum can be used to measure its value. However, when the coupling strength is weak, the conventional method will not work. We experimentally demonstrate that the ringing phenomenon can be used to measure weak coupling strength between the CW and CCW modes in a WGM optical microresonator.