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We predict theoretically and observe experimentally novel defect-free surface waves in truncated arrays of coupled optical waveguides with periodically bent axes, demonstrating their different properties compared to the previously studied Tamm or Shockley type states.
We predict a novel type of defect-free surface waves which, in contrast to previously studied Tamm or Shockley type waves, appear in truncated but otherwise perfect arrays of coupled optical waveguides with periodically bent axes.
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