期刊
OPTICS LETTERS
卷 37, 期 11, 页码 2148-2150出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.37.002148
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资金
- Australian Research Council [FT100100160]
- Australian National Computational Infrastructure (NCI) National Facility
- Russian Foundation for Basic Research [11-08-97057-p-povolzhie-a]
We demonstrate that light propagation in waveguide arrays that include PT-symmetric structures can exhibit strongly nonlocal sensitivity to topology of the array at fixed other parameters. We consider an array composed of lossless waveguides, that includes a pair of PT-symmetric waveguides with balanced gain and loss, and reveal that PT-symmetry breaking thresholds are different for planar and circular array configurations. These results demonstrate that PT-symmetric structures can offer new regimes for optical beam shaping compared to conservative structures. (c) 2012 Optical Society of America
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