量子电子学报, 2013, 30 (3): 318, 网络出版: 2013-08-05
含一缺陷层的一维液晶填充光子晶体缺陷模电场和温度调控特性
Tunable defect mode by temperature and electric field in one dimensional liquid-crystal-filled photonic crystal with a defect layer
光电子学 缺陷模 传输矩阵法 可调光子晶体 液晶 optoelectronics defect mode transfer matrix method tunable photonic crystal liquid crystal
摘要
基于液晶折射率对温度和电场的特性,采用传输矩阵法,研究了含一缺陷层一维液晶填充光子晶体 缺陷模电场和温度调控特性。研究结果表明:当温度T在273~330 K内一定时,随着垂直入射光与电场方向 间夹角θ在(0, π/2)内增大, 缺陷模波长向短波方向漂移,最大调控波长为37.3 nm。当夹角θ在(0, π/2)内一定时,随着外界温度T在273~330 K内升高,缺陷模波长发生改变, 变化量先负后正,最大调控波长为21.9 nm。当θ=0.7505时,不管外界温度T在273~330 K内如何变化,缺陷模波长保持不变。温度对缺陷模波长的影响 比垂直入射光与电场方向间夹角θ对缺陷模波长的影响更弱。
Abstract
Based on the characteristics of liquid crystal rafractive index on electric and temperature, electric field and temperature controlled characteristics of defect mode were investigated in one dimensional liquid-crystal-filled photonic crystal with a defect layer by means of transfer matrix method. The results showed that, as the temperature T is in the range from 273 K to 330 K, the wavelength of defect mode shifted to short wavelength and its variation increased with increasing of the angle θ between perpendicular incident light and electric field direction, which is in the range from 0 to π/2, and the maximum controllable value of wavelength is 37.3 nm. As θ is in the range of 0 ~π/2, the wavelength of defect mode will drift, the quantity of the drift is negative at first, and then positive with rising of external temperature T which is in the range from 273 K to 330 K and the maximum controllable value of wavelength is 21.9 nm. When θ is equal to 0.7505, no matter how to change the external temperature T which is in the range from 273 K to 330 K, the defect mode wavelength remains stable. The effect of temperature on the defect mode wavelength is weaker than that of θ between perpendicular incident light and electric field direction on it.
殷新星, 谢应茂. 含一缺陷层的一维液晶填充光子晶体缺陷模电场和温度调控特性[J]. 量子电子学报, 2013, 30(3): 318. YIN Xin-xing, XIE Ying-mao. Tunable defect mode by temperature and electric field in one dimensional liquid-crystal-filled photonic crystal with a defect layer[J]. Chinese Journal of Quantum Electronics, 2013, 30(3): 318.