Design of waveguide-grating filters with symmetrical line shapes and low sidebands.

@article{Wang1994DesignOW,
  title={Design of waveguide-grating filters with symmetrical line shapes and low sidebands.},
  author={Samuel S.-H Wang and Robert Magnusson},
  journal={Optics letters},
  year={1994},
  volume={19 12},
  pages={919-21}
}
We show that ideal reflection filters can be designed by combining guided-mode resonance effects in waveguide gratings with antireflection effects of thin-film structures. Since the guided-mode resonance effect overrides the antireflection effect this filter provides a symmetrical line shape with near-zero reflectivity over appreciable wavelength bands adjacent to the resonance wavelength. In the single-layer filter the same layer functions as the waveguide grating supporting the resonance and… CONTINUE READING
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