摘要
本文从光子晶体的光子频率禁带特性出发 ,提出了用 2个或以上的均匀周期结构光子晶体叠加在一起 ,形成叠层结构光子晶体 ,以获得窄带滤波特性的设想 ;利用光学传输矩阵法对这种结构进行了数值计算 ,结果证实了构思的正确性 ;设计了信道间隔为 8nm的 8信道波分复用 (WDM)和信道间隔 0 .8nm的 8信道密集波分复用 (DWDM)
We present a photonic crystal narrow band optical filter, which is made of two pieces of photonic crystals with different photonic band gaps. The principle for the system is to arrange the band gaps of two photonic crystals properly so that a small narrow pass band can appear in the combined photonic band gap region. Our numerical investigations show that this kind of structure is feasible for narrow band optical filtering. As an example, we designed a set of filters at 1500 nm with a channel interval of 8 nm for ordinary wavelength division multiplexing (WDM) and a set of filters at 1550 nm with a channel interval of 0.8 nm for dense wavelength division multiplexing (DWND).
出处
《光电子．激光》
EI
CAS
CSCD
北大核心
2002年第2期145-149,共5页
Journal of Optoelectronics·Laser
基金
国家自然科学基金资助项目 (60 1770 3 0 )
深圳市科技局资助项目
关键词
波分复用
光子晶体
滤波器
Bandpass filters
Crystals
Energy gap
Photons
Wavelength division multiplexing
