Optimization of Q-factor in direct-coupled cavity-waveguide photonic crystal structures

被引：6
|
作者：
Rezaei, B. [1 ,2 ]
Khalkhali, T. Fathollahi [1 ]
Vala, A. Soltani [1 ,2 ]
Kalafi, M. [1 ,2 ,3 ]
机构：
[1] Univ Tabriz, Dept Phys, Tabriz, Iran
[2] Univ Tabriz, Res Inst Appl Phys & Astron, Tabriz, Iran
[3] Univ Tabriz, Excellence Ctr Photon, Tabriz, Iran
来源：
OPTIK | 2013年 / 124卷 / 24期
关键词：
Photonic crystal; Direct-coupled cavity-waveguide; Quality factor; FDTD method; Filter diagonalization method; DEFECT MODES; OPTICAL BISTABILITY; HIGH-TRANSMISSION; QUALITY FACTOR; FILTERS; MICROCAVITIES; PROPAGATION; EMISSION; LIGHT;
D O I：
10.1016/j.ijleo.2013.05.166
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In this paper, we analyze numerically the quality factor (Q-factor) of direct-coupled cavity-waveguide structures made within the square lattice photonic crystal by finite difference time domain method (FDTD) using the Harmonic inversion code based on the filter diagonalization method. We investigate the effect of point defect size and addition of size-graded rods on the Q-factor. Moreover, we investigate further increasing of Q-factor by tuning the position of dielectric rods between the cavity and waveguides. These structures with high Q-factor would be advantageous for applications in optical switching. (C) 2013 Elsevier GmbH. All rights reserved.
引用
收藏
页码：7056 / 7061
页数：6
相关论文
共 50 条
  • [31] Scalable high Q-factor Fano resonance from air-mode photonic crystal nanobeam cavity
    Sun, Fujun
    Li, Zhihua
    Tang, Bo
    Li, Bin
    Zhang, Peng
    Liu, Ruonan
    Yang, Gang
    Huang, Kai
    Han, Zhe
    Luo, Jun
    Wang, Wenwu
    Yang, Yan
    NANOPHOTONICS, 2023, 12 (15) : 3135 - 3148
  • [32] Ultrahigh Q-Factor and Ultrasensitive Refractive Index Sensor Based on a Multiple-Slot Photonic Crystal Cavity
    Saha, Partha
    Sen, Mrinal
    IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, 2021, 70
  • [33] Ultrasmall modal volume and high Q factor optimization of a photonic crystal slab cavity
    Wang, Donglin
    Yu, Zhongyuan
    Liu, Yumin
    Guo, Xiaotao
    Shu, Changgan
    Zhou, Shuai
    Zhang, Jinqiannan
    JOURNAL OF OPTICS, 2013, 15 (12)
  • [34] Optimization of Q-factor in nonlinear planar photonic crystal nanocavity incorporating hybrid silicon/polymer material
    Kassa-Baghdouche, Lazhar
    Boumaza, Touraya
    Bouchemat, Mohamed
    PHYSICA SCRIPTA, 2015, 90 (06)
  • [35] Design of high-Q polystyrene nonlinear cavity for ultrafast all-optical switching in mid-infrared photonic crystal slabs with cavity-waveguide structure
    Khalkhali, T. Fathollahi
    Rezaei, B.
    Vala, A. Soltani
    Kalafi, M.
    OPTICS COMMUNICATIONS, 2014, 326 : 43 - 47
  • [36] Q-factor and waveguide-sphere separation effects in waveguide-coupled microsphere resonators
    Panitchob, Y.
    Murugan, G. Senthil
    Zervas, M. N.
    Wilkinson, J. S.
    INTERNATIONAL WORKSHOP AND CONFERENCE ON PHOTONICS AND NANOTECHNOLOGY 2007, 2008, 6793
  • [37] Optimization of the Q factor in photonic crystal microcavities
    Vuckovic, J
    Loncar, M
    Mabuchi, H
    Scherer, A
    IEEE JOURNAL OF QUANTUM ELECTRONICS, 2002, 38 (07) : 850 - 856
  • [38] C-band direct-coupled cavity waveguide filter design using MathCAD software
    Esa, Mazlina
    Yusoff, Mohd Fairus Mohd
    Murad, Noor Asniza
    Sinnathamby, Rengiah
    APACE: 2005 ASIA-PACIFIC CONFERENCE ON APPLIED ELECTROMAGNETICS, PROCEEDINGS, 2005, : 253 - 256
  • [39] Low group velocity in a photonic crystal coupled-cavity waveguide
    Zhang Chang-Xin
    Xu Xing-Sheng
    CHINESE PHYSICS B, 2012, 21 (04)
  • [40] Strongly coupled single quantum dot in a photonic crystal waveguide cavity
    Brossard, F. S. F.
    Xu, X. L.
    Williams, D. A.
    Hadjipanayi, M.
    Hugues, M.
    Hopkinson, M.
    Wang, X.
    Taylor, R. A.
    APPLIED PHYSICS LETTERS, 2010, 97 (11)
12345