Title :
Resonant frequencies and quality factors for optical equilateral triangle resonators calculated by FDTD technique and the Pade approximation
Author :
Wei-Hua Guo ; Yong-Zhen Huang ; Qi-Ming Wang
Author_Institution :
Inst. of Semicond., Acad. Sinica, Beijing, China
fDate :
7/1/2000 12:00:00 AM
Abstract :
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 μm 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 103. 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.
Keywords :
Q-factor; approximation theory; finite difference time-domain analysis; micro-optics; micromechanical resonators; optical communication equipment; optical resonators; FDTD technique; Pade approximation; Q-factor; finite-difference time-domain technique; fundamental mode; mode wavelength; mode wavelength interval; optical equilateral triangle resonators; quality factor; quality factors; radiation loss; refractive index; resonant frequencies; resonant modes; single-mode operation; Finite difference methods; Microcavities; Optical filters; Optical refraction; Optical resonators; Optical variables control; Resonance; Resonant frequency; Time domain analysis; Vertical cavity surface emitting lasers;
Journal_Title :
Photonics Technology Letters, IEEE
