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Giant amplification of modes in parity-time symmetric waveguides

Authors
Journal
Physics Letters A
0375-9601
Publisher
Elsevier
Publication Date
Volume
376
Identifiers
DOI: 10.1016/j.physleta.2012.07.027
Keywords
  • Optical Physics

Abstract

Abstract The combination of the interference with the amplification of modes in a waveguide with gain and losses can result in a giant amplification of the propagating beam, which propagates without distortion of its average amplitude. An increase of the gain-loss gradient by only a few times results in a magnification of the beam by a several orders of magnitude.

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