Resonant frequencies and quality factors for optical equilateral triangle resonators calculated by FDTD technique and the Pade approximation

被引：25
|
作者：
Guo, WH [1 ]
Huang, YZ [1 ]
Wang, QM [1 ]
机构：
[1] Chinese Acad Sci, Inst Semicond, State Key Lab Integrated Optoelect, Beijing 100083, Peoples R China
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2000年 / 12卷 / 07期
基金：
中国国家自然科学基金;
关键词：
finite-difference time-domain technique; microresonator; numerical analysis; quality factor; resonant frequency;
D O I：
10.1109/68.853509
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The mode wavelength and quality factor (Q-factor) for resonant modes in optical equilateral triangle resonators (ETR's) are calculated by the finite-difference time-domain (FDTD) technique and the Pade approximation, For an ETR with the side length of 3 mu m and the refractive index of 3.2, we get the mode wavelength interval of about 70 nm and the Q-factor of the fundamental mode over 10(3), The results show that the ETR is suitable to realize single-mode operation, and that the radiation loss in the corner regions of ETR is rather low, In addition, the numerical results of the mode wavelength agree very well with our analytical formula.
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页码：813 / 815
页数：3
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