Journal
OPTICS COMMUNICATIONS
Volume 277, Issue 2, Pages 406-410Publisher
ELSEVIER
DOI: 10.1016/j.optcom.2007.05.037
Keywords
microflower cavity; deformed cavity; Q-factor stability; directional output; microcavity; whispering-gallery modes
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Mode frequency shifts and Q-factor changes in 2D microllower cavity and its deformed cavity are analyzed. The effective mode-splitting of double-degenerate WG modes is obtained and the Q-factor changes of matched and mismatched modes are discussed for the microflower cavity. The Q-factor stability of the splitted WGH((8, 1)) modes due to two types of local deformations is studied, showing that the local deformations can badly spoil the mode Q-factor if the deformations are not controlled properly. The output directionality of the splitted WGH((8, 1)) modes due to the local deformations also is presented, and a basically unidirectional light output of 00 mode under local deformation DA (deformation happens at one valley of the microflower cavity) is obtained. (c) 2007 Elsevier B.V. All rights reserved.
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