標題: Photonic crystal circular-shaped microcavity and its uniform cavity-waveguide coupling property due to presence of whispering gallery mode
作者: Lee, Po-Tsung
Lu, Tsan-Wen
Yu, Chia-Ming
Tseng, Chung-Chuan
光電工程學系
Department of Photonics
公開日期: 23-Jul-2007
摘要: In this report, we investigate a photonic crystal circular- shaped microcavity ( removing seven air holes) sustaining whispering- gallery mode ( WGM) by shifting the 12 nearest air holes according to the concept of cavity- shaping in micro- disk and micro- gear lasers. The WGM modal characteristics are investigated by three- dimensional ( 3D) finite- difference time- domain ( FDTD) simulations. From well- fabricated devices and simulated results, we obtain and identify WGM single- mode lasing with low threshold and high measured quality factor. By inserting additional waveguides, we also investigate its uniform coupling behaviors in different waveguide- cavity- waveguide geometries in both FDTD simulations and experiments. (c) 2007 Optical Society of America.
URI: http://dx.doi.org/10.1364/OE.15.009450
http://hdl.handle.net/11536/10550
ISSN: 1094-4087
DOI: 10.1364/OE.15.009450
期刊: OPTICS EXPRESS
Volume: 15
Issue: 15
起始頁: 9450
結束頁: 9457
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