Authors:	W. Bogaerts, P. Bienstman, R. Baets
Title:	Scattering at sidewall roughness in photonic crystal slabs
Format:	International Journal
Publication date:	4/2003
Journal/Conference/Book:	Optics Letters
Editor/Publisher:	OSA,
Volume(Issue):	28(9) p.689-691
DOI:	10.1364/OL.28.000689
Citations:	60 (Dimensions.ai - last update: 14/4/2024) 38 (OpenCitations - last update: 3/5/2024) Look up on Google Scholar
Download:	(403KB)

Abstract

We have simulated the effect of sidewall roughness in photonic-crystal-like structures for varying vertical refractive index contrast. We treat the scattering off a sidewall irregularity as a radiating dipole excited by the incident waveguide mode. We show that the loss due to this scattering is significantly larger for structures with a low refractive index contrast (like GaAs/AlGaAs waveguides) compared to structures with a high vertical index contrast (like Silicon-on-insulator or membranes).

Related Research Topics

• Low-loss Nanophotonic waveguides (1999-2010)

Related Projects

• IST: PICCO (Photonic Integrated Circuits using photonic Crystal Optics)
• IAP-V: PHOTON (Photons and Photonics : from basic physics to system concepts)