High-Q cavity based on gradated one-dimensional photonic crystal

A high quality-factor （Q） cavity based on a one-dimensional （1D） photonic crystal with gradated elliptical holes was designed using FDTD simulation. Different gradient profiles of the mirror holes were found to correspond to different Q- values of the cavities. A simple strategy is proposed to const...

Full description

Saved in:
Bibliographic Details
Published in:Chinese physics B 2014-11, Vol.23 (11), p.339-343
Main Author: 高永浩 许兴胜
Format: Article
Language:English
Subjects:
Construction
Finite difference time domain method
Gaussian
Holes
Photonic crystals
Q values
Simulation
Strategy
Trigonometric functions
一维光子晶体
时域有限差分
梯度分布
模拟设计
顺层
高Q腔
高品质因数
高斯函数
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A high quality-factor （Q） cavity based on a one-dimensional （1D） photonic crystal with gradated elliptical holes was designed using FDTD simulation. Different gradient profiles of the mirror holes were found to correspond to different Q- values of the cavities. A simple strategy is proposed to construct high-Q cavities by using an S-shaped gradient profile for the elliptical holes＇ minor axes, such as a cosine function or Gaussian function. Using such a strategy, a Q value exceeding two million is obtained with only ten mirror holes in a cavity.
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/23/11/114205