Journal
OPTICS EXPRESS
Volume 17, Issue 8, Pages 6203-6208Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.17.006203
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Funding
- National Natural Science Foundation of China [60801005, 60531020, 60701007, NCET-07-0750]
- Zhejiang Provincial Natural Science Foundation [R1080320, R105253]
- Ph. D Programs Foundation of MEC [200803351025]
- Office of Naval Research [N00014-06-1-0001]
- Department of the Air Force [F19628-00-C-0002]
- Zhejiang University [08009A]
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Transformation optics provides a promising way to guide waves in the open space. It is shown that a small waveguide coated with transformation medium will behave as a big virtual tunnel connecting two waveguide ports separated faraway. The waves are transmitted and guided smoothly in the open space through this 'invisible tunnel'. The transformation medium is obtained by squeezing the space between the two ports into a small region. Numerical simulations are performed to illustrate this idea. (C) 2009 Optical Society of America
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