摘要
利用由传输矩阵法得到的一维光子晶体的反射率计算公式,针对具体的一维全息光子晶体周期结构,计算了折射率调制周期的改变以及光学厚度的改变对光子禁带结构的影响.结果表明:随着折射率调制周期参数的增大,禁带宽度减小,禁带中心的位置移向短波;随着光学厚度的增大,禁带宽度增大,禁带中心的位置移向长波.在设计光子晶体时,可以根据需要,通过改变光子晶体基本周期结构的参数来实现对光子带隙的控制.
The formulas of reflectivity were derived in one-dimensional holographic photonic crystals with the method of the transfer matrix. With this method, the reflectivity of the one-dimensional holographic pho- tonic crystals was calculated when the basic period of the refractive index modulation and the optical thickness of the basic period structure of the photonic crystal changed. The results show that the width of the gap decreases and the gap center position moves to short wave with the increasing of the parameters of the basic period of the refractive index modulation. With the increasing of the optical thickness, the width of the gap increases, the center position of the gap moves to long wave. When the photonic crystals are designed, the control of the pho- tonic band gap can be achieved via changing the basic period structure parameters of the photonic crystals.
出处
《光电技术应用》
2010年第1期38-40,44,共4页
Electro-Optic Technology Application
基金
徐州医学院公共教育学院科研课题(XYGJ09001)
关键词
全息
光子晶体
禁带
周期结构
光子禁带
光学厚度
holographic
photonic crystals
period structure
photonic band gap
optical thickness
