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Title: Reflectionless design of optical elements using impedance-tunable transformation optics

We report a strategy to remove the reflections resulted from the finite embedded transformation-optical design by proposing a theory of impedance-tunable transformation optics, on which the functions of impedance coefficients can be derived in the original space without changing the refractive index. Based on the approach, two-dimensional reflectionless beam compressors/expanders, bends, shifters, and splitters are designed using the modified anisotropic medium. It is found that the reflections can be removed in magnetic response materials for TE polarization or dielectric response materials for TM polarization. The numerical simulations confirm that various reflectionless optical elements can be realized in the pure transformation optics. The proposed method can be generalized to three-dimensional cases and can be applied to other transformation-optical designs.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [1]
  1. National Research Center for Optical Sensing/Communications Integrated Networking, Department of Electronics Engineering, Southeast University, Nanjing 210096 (China)
  2. (China)
  3. Department of Physics, The University of Texas at Austin, Austin, Texas 78712 (United States)
  4. Department of Physics, Nanjing Xiaozhuang University, Nanjing 211171 (China)
Publication Date:
OSTI Identifier:
22273424
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 19; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ANISOTROPY; COMPUTERIZED SIMULATION; DIELECTRIC MATERIALS; IMPEDANCE; OPTICAL SYSTEMS; REFRACTIVE INDEX; THREE-DIMENSIONAL CALCULATIONS