Abstract

Dispersion curves of surface electromagnetic waves (SEWs) in 1D silicon nitride photonic crystals having periodic surface corrugations are considered. We experimentally demonstrate that a bandgap for SEWs can be obtained by fabricating a polymeric grating on the multilayered structure. Close to the boundary of the first Brillouin zone connected to the grating, we observe the splitting of the SEW dispersion curve into two separate branches and identify two regions of very low group velocity. The proper design of the structure allows the two folded branches to lie beyond the light line in a wide spectral range, thus doubling the density of modes available for SEWs and avoiding light scattering.

© 2008 Optical Society of America

Near-field imaging of Bloch surface waves on silicon nitride one-dimensional photonic crystals

Emiliano Descrovi, Tristan Sfez, Lorenzo Dominici, Wataru Nakagawa, Francesco Michelotti, Fabrizio Giorgis, and Hans-Peter Herzig
Opt. Express 16(8) 5453-5464 (2008)

Experimental determination of a surface wave at the one-dimensional photonic crystal-metal interface

Aldo S. Ramírez-Duverger, Jorge Gaspar-Armenta, and Raúl García-Llamas
J. Opt. Soc. Am. B 25(6) 1016-1024 (2008)

Surface waves between metallic films and truncated photonic crystals observed with reflectance spectroscopy

B. J. Lee, Y.-B. Chen, and Z. M. Zhang
Opt. Lett. 33(3) 204-206 (2008)

Electromagnetic surface waves of multilayer stacks: coupling between guided modes and Bloch modes

Cédric Vandenbem
Opt. Lett. 33(19) 2260-2262 (2008)

Modal coupling in surface-corrugated long-period-grating fiber tapers

W. Ding and S. R. Andrews
Opt. Lett. 33(7) 717-719 (2008)