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论文

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Isotropic wavevector domain image filters by a photonic crystal slab device

  • 发布时间:2020-05-16
  • 点击次数:
  • 发表刊物:JOSA A
  • 摘要:We show that several types of isotropic image filters in the wavevector domain can be implemented with a single photonic crystal slab device. Such a slab is designed so that the guided resonance near the Γ point exhibits an isotropic band structure. Depending on the light frequency and the choice of transmission or reflection mode, the device realizes isotropic high-pass, low-pass, band-reject, and band-pass filtering in wavevector space. These filter functions are important for various image processing tasks, including edge detection, smoothing, white noise suppression, and suppression or …
  • 卷号:35
  • 期号:10
  • 页面范围:1685-1691
  • 是否译文:
  • 发表时间:2018

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