杂质吸收对光子晶体滤波器设计的影响

刘启能

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杂质吸收对光子晶体滤波器设计的影响

刘启能

文章导航 > 激光技术 > 2008 > 32(3): 327-329,336

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杂质吸收对光子晶体滤波器设计的影响

刘启能^,

1.
重庆工商大学理学院, 重庆 400067

作者简介: 刘启能(1957- ),男,教授,从事光学与原子分子物理研究.E-mail:ybxyiwc@sina.com.

通讯作者: 刘启能, ybxywic@sina.com

中图分类号: O46

Effect of absorption of dopant on design of photonic crystal filters

LIU Qi-neng^,

1.
Science College, Chongqing Technology and Business University, Chongqing 400067, China

Corresponding author: LIU Qi-neng, ybxywic@sina.com

CLC number: O46

摘要: 为了研究杂质的吸收对光子晶体滤波器设计的影响,引入复折射率并利用特征矩阵法,计算了滤波透射峰的峰值和半峰全宽。滤波透射峰的峰值随杂质的消光系数增加而迅速减小,滤波通道透射峰的半峰全宽随消光系数增加而增大,滤波透射峰的峰值和半峰全宽都随吸收杂质的光学厚度的增加而减小。结果表明,设计光子晶体滤波器时,必须考虑杂质吸收这一重要因素,应选择消光系数小于0.002的掺杂材料,并且杂质的光学厚度应设计在2(λ0/4)左右。
- 材料 /
- 光子晶体 /
- 滤波器 /
- 缺陷模 /
- 消光系数
Abstract: In order to study the effect of dopant absorption on photonic crystal filters,the peak transmissivity and full width at half maxmum(FWHM) of the filters were calculated based on the complex refractive index and the characteristic matrix.It was found that the peak transmissivity decreased with the increment of the extinction coefficient,however the FWHM increased with the increment of the extinction coefficient.Both the peak transmissivity and the FWHM decreased with the increment of the optical thickness of doping.A valuable conclusion is drawn that the absorption of dopant has to be taken into account for the design of a phonic crystal filter and that the extinction coefficient should be less than 0.002 and the optical thickness of doping should be 2(λ0/4) or so.
- materials /
- photonic crystal /
- filter /
- defect mode /
- extinction coefficient

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杂质吸收对光子晶体滤波器设计的影响

刘启能^,

通讯作者: 刘启能, ybxywic@sina.com

作者简介: 刘启能(1957- ),男,教授,从事光学与原子分子物理研究.E-mail:ybxyiwc@sina.com

1. 重庆工商大学理学院, 重庆 400067

收稿日期: 2007-03-06
录用日期: 2007-03-27
网络出版日期: 2008-06-25

关键词:

摘要: 为了研究杂质的吸收对光子晶体滤波器设计的影响,引入复折射率并利用特征矩阵法,计算了滤波透射峰的峰值和半峰全宽。滤波透射峰的峰值随杂质的消光系数增加而迅速减小,滤波通道透射峰的半峰全宽随消光系数增加而增大,滤波透射峰的峰值和半峰全宽都随吸收杂质的光学厚度的增加而减小。结果表明,设计光子晶体滤波器时,必须考虑杂质吸收这一重要因素,应选择消光系数小于0.002的掺杂材料,并且杂质的光学厚度应设计在2(λ0/4)左右。