液晶可调谐光子晶体谐振腔特性分析  

Analysis of characteristics of liquid crystal tunable photonic crystal resonators

作　　者：张彦[1] 陈鹤鸣[1] 

机构地区：[1]南京邮电大学光通信研究所,江苏南京210003

出　　处：《光通信研究》2010年第3期51-53,共3页Study on Optical Communications

基　　金：南京邮电大学科研基金资助课题(NY207053)

摘　　要：文章提出了一种使用液晶的新型可调谐光子晶体谐振腔结构,利用基于时域有限差分算法的Fullwave软件进行仿真计算,得到了不同的液晶折射率下谐振腔的谐振频率及品质因子。结果表明,整个调谐过程中产生了6个谐振频率,可调谐范围为31.937 nm,其中4个频率的激光品质良好,品质因子最高约为60 000,最低约为2 000。可以看出这种谐振腔具有调谐范围大、品质因子高的特点,因此可以在可调谐激光器中应用。A novel structure of liquid-crystal-based tunable photonic crystal resonators is presented in this paper.Simulation and calculation are conducted by using FDTD algorithm-based Fullwave software,obtaining the resonant frequencies and quality factors in the resonators in different refractive indexes of the liquid crystal.The results show that 6 resonant frequencies are produced in the tubing with a tunable range of 31.937 nm,4 of which have good lasing qualities and the highest quality factor is about 60 000 and the lowest one about 2 000.It can be seen that this kind of resonators are characteristic of large tuning range and high quality factors,thus applicable in tunable lasers.

关 键 词：光子晶体 液晶 谐振腔 调谐 

分 类 号：TN252[电子电信—物理电子学]