Abstract

We have simulated the effect of sidewall roughness in photonic-crystallike structures with different vertical refractive-index contrast. We treated the scattering off a sidewall irregularity as a radiating dipole excited by the incident waveguide mode. We show that the loss that is due to this scattering is significantly larger for structures with a low refractive-index contrast (such as $\mathrm{GaAs}/\mathrm{AlGaAs}$ waveguides) than for structures with a high vertical index contrast (such as silicon-on-insulators and membranes).

© 2003 Optical Society of America

Calculated out-of-plane transmission loss for photonic-crystal slab waveguides

Wan Kuang, Cheolwoo Kim, Andrew Stapleton, Woo Jun Kim, and John D. O’Brien
Opt. Lett. 28(19) 1781-1783 (2003)

Scattering from sidewall deformations in photonic crystals

Christopher G. Poulton, Manfred Müller, and Wolfgang Freude
J. Opt. Soc. Am. B 22(6) 1211-1220 (2005)

Enhancement of spontaneous emission from the resonant modes of a photonic crystal slab single-defect cavity

H. Y. Ryu and M. Notomi
Opt. Lett. 28(23) 2390-2392 (2003)

Reduction of propagation and bending losses of heterostructured photonic crystal waveguides by use of a high-Δ structure

K. Miura, Y. Ohtera, H. Ohkubo, N. Akutsu, and S. Kawakami
Opt. Lett. 28(9) 734-736 (2003)

Taper structures for coupling into photonic crystal slab waveguides

Peter Bienstman, Solomon Assefa, Steven G. Johnson, John D. Joannopoulos, Gale S. Petrich, and Leslie A. Kolodziejski
J. Opt. Soc. Am. B 20(9) 1817-1821 (2003)