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Proceedings Paper

Superluminal reflected pulses in microstrip slabs and photonic crystals
Author(s): J. Arias; A. Sánchez-Meroño; M. M. Sánchez-López; E. Ávila-Navarro; I. Moreno
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Paper Abstract

In this work, we provide experimental and theoretical evidence of negative group delays (NGDs) for pulses reflected on symmetric, linear, and passive microstrip slabs and distributed Bragg reflectors (DBRs) through frequency- and timedomain characterization. These microwave operating devices excellently scale to their analogous structures in the optical range, and confirm recent theoretical predictions on weakly absorbing dielectric slabs. In this context, we demonstrate a simple scaling law for the group delay at the slab's design frequency. In the case of DBRs, we show that, as opposed to transmitted pulses, NGDs do occur for pulses reflected in these linear and periodical one-dimensional (1D) structures. This result sheds light into the still controversial question as whether negative tunneling times are possible in 1D photonic crystals.

Paper Details

Date Published: 14 May 2010
PDF: 10 pages
Proc. SPIE 7713, Photonic Crystal Materials and Devices IX, 77130T (14 May 2010); doi: 10.1117/12.853807
Show Author Affiliations
J. Arias, Univ. Miguel Hernández de Elche (Spain)
A. Sánchez-Meroño, Univ. Miguel Hernández de Elche (Spain)
M. M. Sánchez-López, Univ. Miguel Hernández de Elche (Spain)
E. Ávila-Navarro, Univ. Miguel Hernández de Elche (Spain)
I. Moreno, Univ. Miguel Hernández de Elche (Spain)


Published in SPIE Proceedings Vol. 7713:
Photonic Crystal Materials and Devices IX
Hernán R. Míguez; Sergei G. Romanov; Lucio Claudio Andreani; Christian Seassal, Editor(s)

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