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Title: Laterally coupled hexagonal micro-pillar resonator add-drop filters in silicon nitride
Authors: Ma, Ning
Li, Chao
Poon, Andrew Wing On
Keywords: Micro-pillar resonators
Add-drop filters
Integrated photonic circuits
Silicon-based photonics
Wavelength-division multiplexing
Issue Date: Nov-2004
Citation: IEEE photonics technology letters, v. 16, iss. 11, November 2004, p. 2487-2489
Abstract: We report the first laterally coupled hexagonal micro-pillar resonator add-drop filters in silicon nitride. Our experiment reveals waveguide-coupled resonances of 6-bounce ray orbits in the hexagonal microcavity. By tuning the sub-micrometer waveguide width, we demonstrate simultaneous optimization of the coupling efficiency and the resonance Q value. We attribute the optimum waveguide width to the near k-vector matching between the input and output-coupled waveguide fundamental mode and the cavity 6-bounce modes that are coherently coupled along the resonator flat sidewalls.
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