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Updated: Jun 24, 2026
Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
Published on: November 30, 2012
A planar four-port channel drop filter in the three-dimensional woodpile photonic crystal
Daniel Stieler1, Anthony Barsic, Rana Biswas
1Ames Laboratory and Department of Electrical and Computer Engineering and Microelectronics Research Center, Iowa State University, Ames, Iowa 50011, USA. dstieler@gmail.com
Abstract:
A compact planar channel four-port drop filter is developed experimentally and theoretically in the three-dimensional woodpile photonic crystal having a complete band gap. This consists of two waveguides separated by a defect in a single layer of the photonic crystal. Frequencies for channel dropping can be tuned throughout the band gap, by changing the size of the defect. Quality factors of approximately 1000 were measured. Simulations demonstrate directional energy transfer between the input and out put waveguides, through excitation of fields in the defect region. The planar nature of the filter is much more amenable to fabrication at optical length wavelengths.
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