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Volume 40 Issue 2
Dec.  2015
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Study on filtering characteristics based on tooth-shaped photonic crystal waveguide

  • Corresponding author: HE Xingdao, 154440991@qq.com
  • Received Date: 2015-01-13
    Accepted Date: 2015-03-10
  • In order to design high performance filters based on photonic crystal waveguide, new band-stop filter was proposed by introducing a series of tooth-shaped defects into 2-D photonic crystal waveguide. Transmission characteristics of tooth-shaped photonic crystal waveguide were studied by finite element method. The results show that, for single tooth-shaped defect, resonance frequency generated by defect leads to a band-stop structure and good narrowband filter is achieved. Resonance frequency can be modulated by changing the depth of defect. For multiple tooth-shaped defects, due to the coupling effect, a series of defects form a wide band stop of photonic crystal waveguide with relatively wider bandwidth. Photonic crystal waveguide filters can be simple and fiexible adjustment by introducing tooth-shaped defects to achieve narrow/broadband filters. The study has potential value in the design of photonic filter devices based on photonic crystal waveguides.
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Study on filtering characteristics based on tooth-shaped photonic crystal waveguide

    Corresponding author: HE Xingdao, 154440991@qq.com
  • 1. Jiangxi Engineering Laboratory for Optoelectronics Testing Technology, Nanchang Aeronautical University, Nanchang 330063, China;
  • 2. School of Mechanical Engineering, Nanchang Institute of Science & Technology, Nanchang 330000, China

Abstract: In order to design high performance filters based on photonic crystal waveguide, new band-stop filter was proposed by introducing a series of tooth-shaped defects into 2-D photonic crystal waveguide. Transmission characteristics of tooth-shaped photonic crystal waveguide were studied by finite element method. The results show that, for single tooth-shaped defect, resonance frequency generated by defect leads to a band-stop structure and good narrowband filter is achieved. Resonance frequency can be modulated by changing the depth of defect. For multiple tooth-shaped defects, due to the coupling effect, a series of defects form a wide band stop of photonic crystal waveguide with relatively wider bandwidth. Photonic crystal waveguide filters can be simple and fiexible adjustment by introducing tooth-shaped defects to achieve narrow/broadband filters. The study has potential value in the design of photonic filter devices based on photonic crystal waveguides.

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