Tunable optical filter with high performance based on 2D photonic crystal

被引:7
作者
Dangi, Milad Moradi [1 ]
Aghdam, Anwar Mohammadzadeh [1 ]
Karimzadeh, Rouhollah [1 ]
机构
[1] Shahid Beheshti Univ, Dept Phys, Tehran, Iran
关键词
Photonic crystal; Photonic bandgap; Optical filter; Quality factor; CHANNEL-DROP FILTERS; DESIGN; OPTIMIZATION; LOGIC;
D O I
10.1007/s10825-023-02020-0
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
In this paper, we investigate the performance of a new form of photonic crystal filter. The proposed filter consists of two waveguides and a resonator whose resonator section consists of a rectangular defect and two rods with different radii and refractive index. The structure consists of a two-dimensional square lattice with circular dielectric rods in the air bed. The final dimension of this filter is 60.86 mu m(2). The photonic crystal band structure calculations are performed using the plane wave expansion method. The finite difference time domain is used to propagate the electromagnetic field in the filter and plot the corresponding transmission spectra. The transmission efficiency, bandwidth, and quality factor at the resonant wavelength 1582.2955 nm are equal to 93.6%, 0.077 nm, and 20549.3, respectively. Also, the effect of different parameters on the wavelength selection behavior of the proposed filter is studied. The simplicity of design and integration capability is important features of this filter, and this feature makes this design suitable for optical telecommunication applications.
引用
收藏
页码:849 / 855
页数:7
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