Volume 28 Issue 10
Aug.  2016
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Ni Yuan, Ji Ke, Wang Jingli, et al. Four-wavelength THz filter based on photonic crystal ring resonator[J]. High Power Laser and Particle Beams, 2016, 28: 103101. doi: 10.11884/HPLPB201628.160055
Citation: Ni Yuan, Ji Ke, Wang Jingli, et al. Four-wavelength THz filter based on photonic crystal ring resonator[J]. High Power Laser and Particle Beams, 2016, 28: 103101. doi: 10.11884/HPLPB201628.160055

Four-wavelength THz filter based on photonic crystal ring resonator

doi: 10.11884/HPLPB201628.160055
  • Received Date: 2016-02-22
  • Rev Recd Date: 2016-04-06
  • Publish Date: 2016-10-15
  • A four-wavelength THz filter based on photonic crystal ring resonators is proposed in the paper, which contains a square dielectric column in each of the two ring resonators and around the column there are four scattering dielectric cylinders. An FDTD-based Rsoft software is used for simulation and the results show that four THz wavelengths (74.813, 76.980, 78.168 and 78.883 m) can be filtered out by changing the structure parameters such as the side length of the internal square dielectric column, scattering media cylinder radius and the coupling medium cylinder radius. The performance of this filter is excellent because of its high transmittance, high Q value and large channel isolation, in which case this filter has important meaning for THz technology application.
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