Ringing phenomenon based measurement of weak mode-coupling strength in an optical microresonator.
Ringing phenomenon based measurement of weak mode-coupling strength in an optical microresonator.
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基于振铃现象的光学微谐振器中弱模耦合强度的测量
DOI:
10.1038/s41598-017-16961-7
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发表时间:
2017-12-12
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
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.
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