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Journal Articles Optics Express Year : 2010

Statistical fluctuations of transmission in slow light photonic-crystal waveguides

Abstract

We report statistical fluctuations for the transmissions of a series of photonic-crystal waveguides (PhCWs) that are supposedly identical and that only differ because of statistical structural fabrication-induced imperfections. For practical PhCW lengths offering tolerable −3dB attenuation with moderate group indices (ng≈60), the transmission spectra contains very narrow peaks (Q≈20,000) that vary from one waveguide to another. The physical origin of the peaks is explained by calculating the actual electromagnetic-field pattern inside the waveguide. The peaks that are observed in an intermediate regime between the ballistic and localization transports are responsible for a smearing of the local density of states, for a rapid broadening of the probability density function of the transmission, and bring a severe constraint on the effective use of slow light for on-chip optical information processing. The experimental results are quantitatively supported by theoretical results obtained with a coupled-Bloch-mode approach that takes into account multiple scattering and localization effects
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Dates and versions

hal-00570635 , version 1 (05-04-2012)

Identifiers

  • HAL Id : hal-00570635 , version 1

Cite

Simon Mazoyer, Philippe Lalanne, Jean-Claude Rodier, Jean-Paul Hugonin, M. Spasenovic, et al.. Statistical fluctuations of transmission in slow light photonic-crystal waveguides. Optics Express, 2010, 18 (14), pp.14654-14663. ⟨hal-00570635⟩
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