• Corpus ID: 119197320

High-efficiency waveguide couplers via impedance-tunable transformation optics

@article{Cao2014HighefficiencyWC,
  title={High-efficiency waveguide couplers via impedance-tunable transformation optics},
  author={Jun Cao and Lifa Zhang and Weifeng Jiang and Senlin Yan and Xiaohan Sun},
  journal={arXiv: Optics},
  year={2014}
}
We design compact waveguide couplers via impedance-tunable transformation optics. By tuning impedance coefficients in the original space, two-dimensional metallic and dielectric waveguide couplers are designed with a high efficiency. Through tuning refractive index simultaneously, we find that the transformation medium inside a designed metallic waveguide coupler can be a reduced-parameter material for coupling waves between waveguides with arbitrary different cross sections and embedded media… 
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