Measurement of superluminal optical tunneling times in double-barrier photonic band gaps.

@article{Longhi2002MeasurementOS,
  title={Measurement of superluminal optical tunneling times in double-barrier photonic band gaps.},
  author={Stefano Longhi and Paolo Laporta and Michele Belmonte and Erasmo Recami},
  journal={Physical review. E, Statistical, nonlinear, and soft matter physics},
  year={2002},
  volume={65 4 Pt 2B},
  pages={046610}
}
Tunneling of optical pulses at 1.5 microm wavelength through double-barrier periodic fiber Bragg gratings is experimentally investigated in this paper. Tunneling time measurements as a function of the barrier distance show that, far from resonances of the structure, the transit time is paradoxically short--implying superluminal propagation--and almost independent of the barrier distance. This result is in agreement with theoretical predictions based on phase-time analysis and provides, in the… CONTINUE READING
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