光学波段菲波纳契序列一维光子晶体纳米膜传输特性研究

为了研究光学波段菲波纳契序列一维光子晶体纳米膜的传输特性,应用传输矩阵方法数值模拟各种情况下的透射率即传输函数随频率的变化.数值结果表明在正入射时,菲波纳契序列一维光子晶体中的禁带宽度、中心位置、数目都与构成序列的项数、组元物理厚度、组成序列组元初始次序、组元折射率差值都对传输特性有较大影响,在可见光区组元折射率差值越大越易形成较宽禁带,进一步研究广义菲波纳契序列一维光子晶体纳米膜的传输特性,发现比典型情况更易在可见光区形成禁带.

Study on the Transmission Properties of Fibonacci One-Dimensional Photonic Crystal Nanometer Films in Visible Region

In order to study the transmission properties of one-dimensional photonic crystal nanometer films with Fibonacci sequence in visible region,the transfer matrix method (TMM) is used to analyze the transmission coefficients changing with frequencies in various cases.The numerical results show that in the normal incidence the transmission property is influenced by the Fibonacci sequence terms,physical thickness,initial order and the refractive index difference of the component,and the more the refractive index difference,the easier the wide forbidden band will exist in the visible light area.The further studies on the transmission properties of generalized Fibonacci sequence one-dimensional photonic crystal nanometer films are also done and the results show that they are easier to form band gap than the typical situation in the visible region.