A super narrow band filter based on silicon 2D photonic crystal resonator and reflectors

被引:49
作者
Wang, Yuanyuan [1 ]
Chen, Deyuan [1 ]
Zhang, Gang [1 ]
Wang, Juebin [1 ]
Tao, Shangbin [1 ]
机构
[1] Nanjing Univ Posts & Telecommun, Nanjing 210003, Jiangsu, Peoples R China
关键词
Photonic crystals; Resonator; Reflector; Narrow band filter; CHANNEL DROP FILTER; RING-RESONATOR; DESIGN; ANGLE;
D O I
10.1016/j.optcom.2015.10.070
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
In this paper, a novel structure of super narrow band filter based on two-dimensional square lattice photonic crystals of silicon rods in air for 1.5 urn communication is proposed and studied. COMSOL Multiphysics4.3b software is used to simulate the optical behavior of the filter. The filter consists of one point-defect-based resonator and two line-defect-based reflectors. The resonance frequency, transmission coefficient and quality factor are investigated by varying the parameters of the structure. In design, a silicon rod is removed to form the resonator; for the rows of rods above and below the resonator, a part of the rods are removed to form the reflectors. By optimizing the parameters of the filter, the quality factor and transmission coefficient of the filter at the resonance frequency of 2e14 Hz can reach 1330 and 0.953, respectively. The super narrow band filter can be integrated into optical circuit for its micron size. Also, it can be used for wavelength selection and noise filtering of optical amplifier in future communication application. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码:13 / 20
页数:8
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