Abstract

Coupled-cavity waveguides (CCWs) allow light propagation with strong field confinement in the cavities and small group velocity, which greatly enhances the efficiency of nonlinear effects. In addition, guided modes have zero dispersion at the central region of the transmission miniband. We show that CCWs created in planar photonic crystals, in which index guiding is required in some spatial dimensions, are intrinsically lossy in the region of zero dispersion, which strongly limits their use in nonlinear applications and devices.

© 2007 Optical Society of America

Photonic crystal waveguide-mode orthogonality conditions and computation of intrinsic waveguide losses

Jeremy Witzens, Thomas Baehr-Jones, Michael Hochberg, Marko Lončar, and Axel Scherer
J. Opt. Soc. Am. A 20(10) 1963-1968 (2003)

Experimental observation of slow mode dispersion in photonic crystal coupled-cavity waveguides

Jana Jágerská, Nicolas Le Thomas, Vasily Zabelin, Romuald Houdré, Wim Bogaerts, Pieter Dumon, and Roel Baets
Opt. Lett. 34(3) 359-361 (2009)

Coupling into slow-mode photonic crystal waveguides

J. P. Hugonin, P. Lalanne, T. P. White, and T. F. Krauss
Opt. Lett. 32(18) 2638-2640 (2007)

Ultra slow light achievement in photonic crystals by merging coupled cavities with waveguides

Kadir Üstün and Hamza Kurt
Opt. Express 18(20) 21155-21161 (2010)

Group velocity and dispersion model of coupled-cavity waveguides in photonic crystals

Alejandro Martı́nez, Andrés Garcı́a, Pablo Sanchis, and Javier Martı́
J. Opt. Soc. Am. A 20(1) 147-150 (2003)